/* 保持原有的响应式布局 CSS 不变 */
    .sinmar-container { max-width: 1100px; margin: 0 auto; padding: 20px; font-family: 'Segoe UI', Arial, sans-serif; color: #333; line-height: 1.8; }
    .sinmar-section { margin-bottom: 60px; }
    h1 { font-size: 2.5em; font-weight: 800; color: #1a1a1a; margin-bottom: 20px; text-align: center; }
    h2 { font-size: 1.8em; border-left: 5px solid #e67e22; padding-left: 15px; margin-bottom: 25px; }
    .flex-layout { display: flex; align-items: center; gap: 40px; margin-bottom: 40px; flex-wrap: wrap; }
    .text-part, .img-part { flex: 1 1 400px; }
    @media (max-width: 768px) { .flex-layout { flex-direction: column-reverse; gap: 20px; } .flex-layout.img-first { flex-direction: column; } }
    .img-box { width: 100%; display: flex; align-items: center; justify-content: center; background-color: #f7f7f7; border-radius: 8px; overflow: hidden; }
    .img-box img { max-width: 100%; height: auto; display: block; object-fit: contain; }
    .hero-container { text-align: center; margin-bottom: 60px; }
    .hero-img-box img { width: 100%; max-width: 900px; border-radius: 12px; box-shadow: 0 10px 30px rgba(0,0,0,0.15); }
    .grid-three { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; }
    .spec-table { width: 100%; border-collapse: collapse; background: #fff; }
    .spec-table th, .spec-table td { padding: 15px; border: 1px solid #eee; text-align: left; }
    .faq-block { background: #fdfdfd; padding: 25px; border-radius: 8px; }
    .faq-item { margin-bottom: 20px; border-bottom: 1px solid #eee; padding-bottom: 15px; }