* { 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: 1.7; 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; clear: both;
    }
    ul, ol { padding-left: 20px; margin-bottom: 1.2em; }
    ul li, ol li { font-size: 15.5px; line-height: 1.7; color: #2c3e4f; margin-bottom: 0.4em; }
    a { color: #007bff; text-decoration: none; }
    a:hover { text-decoration: underline; }
    strong { color: #0f172a; }

    /* 浮动图片：文字围绕 */
    .img-left, .img-right, .img-wide {
        height: auto; border-radius: 12px; display: block;
    }
    .img-left { float: left; width: 40%; max-width: 420px; margin: 6px 24px 14px 0; }
    .img-right { float: right; width: 40%; max-width: 420px; margin: 6px 0 14px 24px; }
    .img-wide { float: right; width: 45%; max-width: 460px; margin: 6px 0 14px 24px; }

    /* 通栏图片：文字不围绕 */
    .img-full { display: block; width: 100%; height: auto; margin: 8px 0 20px 0; border-radius: 12px; }

    .clearfix::after { content: ""; display: block; clear: both; }

    .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);
        clear: both;
    }
    .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;
    }
    .btn:hover { background-color: #0069d9; color: #fff; text-decoration: none; }

    @media (max-width: 760px) {
        body { padding: 18px 12px; }
        .container { padding: 24px 18px 32px; border-radius: 20px; }
        .section-title { font-size: 19px; }
        p, ul li, ol li { font-size: 15px; }
        .img-left, .img-right, .img-wide {
            float: none; width: 100%; max-width: 100%; margin: 10px 0 18px 0;
        }
    }