.hansen-detail-content {
        padding: 30px 0 60px;
        background-color: #fcfcfc;
    }

    .detail-breadcrumb {
        margin-bottom: 20px;
        font-size: 14px;
        color: #888;
    }
    .detail-breadcrumb a { color: #0056b3; text-decoration: none; }

    /* 左右分栏布局 */
    .hansen-detail-flex {
        display: flex;
        gap: 40px;
        align-items: flex-start;
    }

    .detail-main { flex: 2; }
    .detail-sidebar { flex: 1; position: sticky; top: 20px; }

    /* 视频展示区 */
    .main-video-wrapper {
        position: relative;
        padding-bottom: 56.25%;
        height: 0;
        background: #000;
        border-radius: 8px;
        overflow: hidden;
        box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    }
    .main-video-wrapper iframe {
        position: absolute;
        top: 0; left: 0; width: 100%; height: 100%; border: none;
    }

    /* 文字介绍区 */
    .project-intro { margin-top: 30px; }
    .project-intro h1 { font-size: 28px; color: #333; margin-bottom: 10px; }
    .project-tags span {
        background: #e9f0f7; color: #0056b3; padding: 4px 12px;
        border-radius: 20px; font-size: 12px; margin-right: 8px;
    }
    .intro-text h3 { border-left: 4px solid #0056b3; padding-left: 15px; margin: 30px 0 15px; }
    .intro-text p, .intro-text li { color: #555; line-height: 1.8; margin-bottom: 10px; }

    /* 侧边栏卡片 */
    .spec-card, .quick-inquiry-card {
        background: #fff; padding: 25px; border-radius: 8px;
        box-shadow: 0 4px 15px rgba(0,0,0,0.05); margin-bottom: 30px;
        border: 1px solid #eee;
    }
    .spec-card h3, .quick-inquiry-card h3 { font-size: 20px; margin-bottom: 20px; color: #333; }
    
    .spec-list { list-style: none; padding: 0; }
    .spec-list li {
        padding: 10px 0; border-bottom: 1px dashed #eee;
        display: flex; justify-content: space-between; font-size: 14px;
    }
    .spec-list li strong { color: #0056b3; }

    /* 表单样式 */
    .sidebar-form input, .sidebar-form textarea {
        width: 100%; padding: 12px; margin-bottom: 15px;
        border: 1px solid #ddd; border-radius: 4px; box-sizing: border-box;
    }
    .submit-btn {
        width: 100%; background: #0056b3; color: #fff; border: none;
        padding: 15px; border-radius: 4px; cursor: pointer; font-weight: bold;
    }
    .submit-btn:hover { background: #003d82; }

    .whatsapp-link { text-align: center; margin-top: 15px; }
    .whatsapp-link a { color: #25d366; text-decoration: none; font-weight: bold; }

    /* 响应式适配 */
    @media (max-width: 992px) {
        .hansen-detail-flex { flex-direction: column; }
        .detail-sidebar { width: 100%; position: static; }
    }