* { box-sizing: border-box; }
        body { font-family: 'Montserrat', sans-serif; background: #fdfdfd; color: #111; margin: 0; line-height: 1.6; }
        
        /* 头部：工业锐利感 */
        .hero-section { background: #000; color: #fff; padding: 120px 5%; clip-path: polygon(0 0, 100% 0, 100% 90%, 0 100%); }
        .hero-section h1 { font-size: 3.5rem; margin-bottom: 20px; line-height: 1.1; }
        
        /* 卡片层：技术叙事 */
        .card-container { display: flex; flex-wrap: wrap; padding: 50px 5%; gap: 30px; margin-top: -50px; }
        .card { flex: 1; min-width: 320px; background: #fff; padding: 40px; box-shadow: 0 20px 40px rgba(0,0,0,0.1); border-top: 5px solid #0984e3; }
        
        /* 视觉占位 */
        .img-block { background: #eee; width: 100%; height: 400px; display: flex; align-items: center; justify-content: center; position: relative; border: 2px dashed #999; }
        
        /* 深度文案块样式 */
        .tech-content { padding: 80px 15%; background: #fff; }
        .tech-content h3 { color: #0984e3; text-transform: uppercase; letter-spacing: 2px; }
        
        .cta-box { text-align: center; padding: 100px 5%; background: #000; color: #fff; }
        .btn-bold { padding: 20px 60px; background: transparent; border: 2px solid #fff; color: #fff; text-decoration: none; font-weight: 800; text-transform: uppercase; }