<style>
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.container6 {
    max-width: 1200px;
    margin: 20px auto;
    padding: 6px;
}

.header11 {
    text-align: center;
    padding: 0 0 22px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}
h1 {
    font-size: 28px;
    font-weight: 700;
    color: #2d3748;
    margin-bottom: 18px;
    position: relative;
    display: inline-block;
}
h1::after {
    content: "";
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 4px;
    background: linear-gradient(90deg, #258c44, #2c3e50);
    border-radius: 2px;
}
.subtitle2 {
    font-size: 16px;
    letter-spacing: 1.5px;
    color: #535353;
    max-width: 1000px;
    margin: 0 auto;
}
</style>