:root {
            --tm-primary: #0056b3;
            --tm-secondary: #6c757d;
            --tm-accent: #28a745;
            --tm-light: #f8f9fa;
            --tm-dark: #212529;
            --tm-gradient: linear-gradient(135deg, var(--tm-primary), #003d82);
        }
        body {
            font-family: "Microsoft YaHei", "Segoe UI", sans-serif;
            color: #333;
            line-height: 1.7;
        }
        .navbar {
            background-color: rgba(255, 255, 255, 0.97);
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
            padding-top: 0.8rem;
            padding-bottom: 0.8rem;
        }
        .navbar-brand {
            font-weight: 700;
            font-size: 1.8rem;
            color: var(--tm-primary) !important;
        }
        .navbar-brand i {
            color: var(--tm-accent);
            margin-right: 8px;
        }
        .nav-link {
            font-weight: 500;
            margin: 0 5px;
            border-radius: 4px;
            transition: all 0.2s;
        }
        .nav-link:hover, .nav-link.active {
            background-color: rgba(0, 86, 179, 0.1);
            color: var(--tm-primary) !important;
        }
        .hero-section {
            background: var(--tm-gradient) url('https://images.unsplash.com/photo-1558618666-fcd25c85cd64?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80') center/cover no-repeat;
            padding: 8rem 0 6rem;
            color: white;
            position: relative;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            background: rgba(0, 0, 0, 0.5);
        }
        .hero-content {
            position: relative;
            z-index: 2;
        }
        .hero-title {
            font-size: 3.2rem;
            font-weight: 700;
            margin-bottom: 1.5rem;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
        }
        .hero-subtitle {
            font-size: 1.25rem;
            margin-bottom: 2rem;
            max-width: 700px;
        }
        .section-title {
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 3rem;
            text-align: center;
            font-weight: 700;
            color: var(--tm-dark);
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--tm-gradient);
            border-radius: 2px;
        }
        .feature-card {
            border: none;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            transition: transform 0.4s ease, box-shadow 0.4s ease;
            height: 100%;
            margin-bottom: 1.5rem;
        }
        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 40px rgba(0, 86, 179, 0.15);
        }
        .feature-icon {
            width: 80px;
            height: 80px;
            background: var(--tm-gradient);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 2rem auto 1.5rem;
            color: white;
            font-size: 2rem;
        }
        .product-img {
            height: 220px;
            object-fit: cover;
            width: 100%;
            transition: transform 0.5s ease;
        }
        .feature-card:hover .product-img {
            transform: scale(1.05);
        }
        .btn-tm-primary {
            background: var(--tm-gradient);
            border: none;
            color: white;
            padding: 0.75rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        .btn-tm-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(0, 86, 179, 0.4);
            color: white;
        }
        .news-card {
            border-left: 5px solid var(--tm-primary);
            transition: all 0.3s ease;
        }
        .news-card:hover {
            border-left-color: var(--tm-accent);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        .contact-info-box {
            background: var(--tm-light);
            border-radius: 10px;
            padding: 2rem;
            text-align: center;
            height: 100%;
            border-top: 5px solid var(--tm-primary);
            transition: transform 0.3s ease;
        }
        .contact-info-box:hover {
            transform: translateY(-5px);
        }
        .contact-info-box i {
            font-size: 2.5rem;
            color: var(--tm-primary);
            margin-bottom: 1rem;
        }
        .footer {
            background-color: #1a1a1a;
            color: #ccc;
            padding-top: 4rem;
            padding-bottom: 2rem;
        }
        .footer a {
            color: #bbb;
            text-decoration: none;
            transition: color 0.2s;
        }
        .footer a:hover {
            color: white;
        }
        .footer-bottom {
            border-top: 1px solid #333;
            padding-top: 1.5rem;
            margin-top: 3rem;
            font-size: 0.9rem;
        }
        .flink {
            display: inline-block;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid #444;
            border-radius: 6px;
            padding: 0.5rem 1.2rem;
            margin: 0.3rem;
            color: #ddd !important;
            text-decoration: none !important;
            transition: all 0.3s ease;
        }
        .flink:hover {
            background: var(--tm-primary);
            border-color: var(--tm-primary);
            color: white !important;
            transform: translateY(-2px);
        }
        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.2rem;
            }
            .navbar-nav {
                text-align: center;
                padding-top: 1rem;
            }
        }
        .sticky-top {
            animation: slideDown 0.5s ease;
        }
        @keyframes slideDown {
            from { transform: translateY(-100%); }
            to { transform: translateY(0); }
        }
        .accordion-button:not(.collapsed) {
            background-color: rgba(0, 86, 179, 0.1);
            color: var(--tm-primary);
            font-weight: 600;
        }
        .schema-logo {
            display: none;
        }