body {
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
        line-height: 1.8;
        margin: 0;
        background: #f4f6f9;
        color: #2c2c2c;
    }

    .container {
        max-width: 900px;
        margin: 50px auto;
        background: #ffffff;
        padding: 60px;
        border-radius: 12px;
        box-shadow: 0 6px 30px rgba(0,0,0,0.06);
    }

    h1 {
        font-size: 36px;
        font-weight: 700;
        text-align: center;
        margin-bottom: 10px;
        letter-spacing: 0.5px;
    }

    .update {
        text-align: center;
        font-size: 14px;
        color: #888;
        margin-bottom: 40px;
    }

    h2 {
        font-size: 20px;
        font-weight: 600;
        margin-top: 40px;
        margin-bottom: 15px;
        padding-left: 12px;
        border-left: 4px solid #1677ff;
    }

    p {
        font-size: 15px;
        color: #444;
        margin: 10px 0;
    }

    ul {
        margin: 10px 0 15px 20px;
        padding: 0;
    }

    li {
        font-size: 15px;
        margin-bottom: 6px;
    }

    .section {
        margin-bottom: 10px;
    }

    .footer {
        margin-top: 50px;
        padding-top: 20px;
        border-top: 1px solid #eee;
        text-align: center;
        font-size: 13px;
        color: #999;
    }

    @media (max-width: 768px) {
        .container {
            padding: 30px 20px;
            margin: 20px;
        }

        h1 {
            font-size: 28px;
        }

        h2 {
            font-size: 18px;
        }
    }