/* 核心样式统一样式 */
    * { margin: 0; padding: 0; box-sizing: border-box; }
    body {
        font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        background-color: #f9fafb; padding: 32px 20px; margin: 0; color: #1f2937;
    }
    .container {
        max-width: 1000px; margin: 0 auto; background: white; border-radius: 28px;
        box-shadow: 0 12px 30px rgba(0,0,0,0.05); padding: 40px 36px 48px;
    }
    p { font-size: 15.5px; line-height: 1.6; color: #2c3e4f; margin-bottom: 1.2em; }
    .section-title {
        font-size: 21px; font-weight: 700; color: #0f172a; margin: 2em 0 0.8em 0;
        padding-left: 14px; border-left: 4px solid #007BFF;
    }
    .divider-bold {
        margin: 40px 0 32px 0; border: 0; height: 2px;
        background: linear-gradient(to right, transparent, #cbd5e1, #94a3b8, #cbd5e1, transparent);
    }
    .cta-box {
        text-align: center; background: #ffffff; border-radius: 28px; margin-top: 28px;
        padding: 24px 20px; border: 1px solid #e5e7eb; box-shadow: 0 8px 20px rgba(0,0,0,0.03);
    }
    .btn {
        display: inline-block; padding: 14px 32px; background-color: #007BFF; color: #fff;
        text-decoration: none; font-size: 16px; font-weight: 600; border-radius: 40px;
        transition: background 0.2s ease; border: none; cursor: pointer; text-align: center;
    }

    /* 图片排版优化 */
    .full-width-img {
        display: block; width: 100%; height: auto; border-radius: 16px;
        box-shadow: 0 4px 20px rgba(0,0,0,0.08); margin: 30px 0; cursor: pointer;
    }
    
    .feature-row {
        display: flex; align-items: center; gap: 24px; margin: 20px 0;
    }
    .feature-row.reverse { flex-direction: row-reverse; }
    .feature-img {
        width: 180px; flex-shrink: 0; border-radius: 12px;
        box-shadow: 0 4px 14px rgba(0,0,0,0.08); cursor: pointer;
    }
    .feature-text { flex: 1; }

    .img-grid-3 { display: flex; flex-wrap: wrap; gap: 12px; margin: 20px 0; }
    .img-grid-3 .grid-img {
        flex: 1 1 0; min-width: 150px; border-radius: 10px; cursor: pointer;
        transition: transform 0.2s;
    }

    /* 放大弹窗 */
    .modal {
        display: none; position: fixed; z-index: 999; left: 0; top: 0; width: 100%; height: 100%;
        background-color: rgba(0,0,0,0.85); align-items: center; justify-content: center;
    }
    .modal.show { display: flex; }
    .modal img { max-width: 90%; max-height: 90%; border-radius: 12px; }
    .modal .close { position: absolute; top: 30px; right: 40px; color: #fff; font-size: 40px; cursor: pointer; }

    @media (max-width: 760px) {
        .feature-row, .feature-row.reverse { flex-direction: column; text-align: center; }
        .feature-img { width: 100%; max-width: 260px; }
        .img-grid-3 .grid-img { flex: 1 1 45%; }
    }