.hero {
            height: 100vh;
            min-height: 700px;
            background: linear-gradient(rgba(0, 51, 102, 0.8), rgba(0, 51, 102, 0.9)), url('https://www.tieyunfei.com/wp-content/uploads/2025/07/haikong.png') no-repeat center center/cover;
            display: flex;
            align-items: center;
            position: relative;
            color: white;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 150px;
            background: url('https://www.tieyunfei.com/wp-content/uploads/2025/07/haikong.png"></path></svg>');
            background-size: cover;
        }

        .hero-content {
            max-width: 700px;
            position: relative;
            z-index: 2;
        }

        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: 20px;
            line-height: 1.2;
        }

        .hero p {
            font-size: 1.3rem;
            margin-bottom: 30px;
            max-width: 600px;
        }

        .hero-btns {
            display: flex;
            gap: 20px;
            margin-top: 30px;
        }

        .btn-outline {
            background: transparent;
            border: 2px solid white;
            color: white;
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .hero-stats {
            margin: 30px 0;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .stat {
            text-align: center;
            padding: 15px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 8px;
        }

        .stat-number {
            font-size: 2rem;
            font-weight: 700;
        }

        .stat-label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.8);
        }

        @media (max-width: 768px) {
            .hero h1 {
                font-size: 2.5rem;
            }

            .hero-btns {
                flex-direction: column;
            }
        }
		/* 2 核心服务 */
		        .section {
            padding: 80px 0;
        }

        .section-title {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-title h2 {
            font-size: 2.5rem;
            color: #003366;
            margin-bottom: 15px;
        }

        .section-title p {
            font-size: 1.2rem;
            color: #6c757d;
            max-width: 700px;
            margin: 0 auto;
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }

        .service-card {
            background: white;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
            text-align: center;
            padding: 30px 25px;
        }

        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }

        .service-icon {
            width: 80px;
            height: 80px;
            margin: 0 auto 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 107, 0, 0.1);
            border-radius: 50%;
            color: #FF6B00;
            font-size: 2rem;
        }

        .service-card h3 {
            font-size: 1.5rem;
            margin-bottom: 15px;
            color: #003366;
        }

        .service-stats {
            font-size: 2.5rem;
            font-weight: 700;
            color: #FF6B00;
            margin: 15px 0;
        }

        .service-card .btn {
            margin-top: 20px;
            padding: 10px 20px;
            font-size: 0.9rem;
        }

        @media (max-width: 992px) {
            .services-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .services-grid {
                grid-template-columns: 1fr;
            }
        }