.header-pc .navbar {
    display: flex;
    justify-content: center;
    border-bottom: 2px solid #FF0000;
    background: #FFFFFF;
}

    .header-pc .navbar .container {
        display: flex;
        justify-content: center;
        gap: 25px;
    }

.header-pc .annoucement{
    margin-top:20px;
}

.header-pc .annoucement .video-player-container {
    display: flex;
    gap: 20px;
}

.header-pc .annoucement .video-main {
    flex: 1;
}

    .header-pc .annoucement .video-main #mainVideo {
        width: 100%;
        height: 500px;
        border: 3px solid #FF0000;
        border-radius: 14px;
        background: #000;
    }

    .header-pc .annoucement .video-main iframe {
        width: 100%;
        height: 500px;
    }

    .header-pc .annoucement .video-playlist {
        width: 300px;
        max-height: 500px;
        border: 1px solid #ddd;
        padding: 12px;
        box-sizing: border-box;
        background-color: #f9f9f9;
        border: 3px solid #FF0000;
        border-radius: 14px;
        overflow-y: scroll;
    }

    .header-pc .annoucement .video-playlist::-webkit-scrollbar-thumb {
        background-color: transparent;
        border: 3px solid transparent;
        border-radius: 8px;
        background-clip: padding-box;
    }

    .header-pc .annoucement .video-playlist::-webkit-scrollbar {
        width: 0px;
    }

    .header-pc .annoucement .video-playlist h4 {
        margin-top: 0;
        font-size: 16px;
        margin-bottom: 10px;
    }

.header-pc .annoucement #playlist {
    list-style: none;
    padding: 0;
    margin: 0;
}

    .header-pc .annoucement #playlist li {
        position: relative;
        cursor: pointer;
        margin-bottom: 10px;
        overflow: hidden;
        border-radius: 14px;
    }
        .header-pc .annoucement #playlist li::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.4);
            z-index: 1;
        }
        .header-pc .annoucement #playlist li.selected {
            border: 4px solid #FF0000;
            border-radius:14px
        }
            .header-pc .annoucement #playlist li.selected::before {
                opacity: 0;
                pointer-events: none;
            }

        .header-pc .annoucement #playlist li img {
            width: 100%;
            transition: transform 0.2s;
        }

        .header-pc .annoucement #playlist li:hover img {
            transform: scale(1.03);
            border-color: #007bff;
        }

.header-pc .menu-group {
    margin-top: 30px;
    margin-bottom: 30px;
    display: flex;
    gap: 35px;
    justify-content: center;
}

.header-pc .menu-item {
    font-weight: 700;
    font-size: 21px;
    line-height: 100%;
    letter-spacing: 0;
    text-align: center;
    color: #fff;
    max-width: 320px;
    padding: 12px 20px;
    width: 100%;
    border-radius: 39px;
    overflow: hidden;
    background: #F40000;
}

.header-pc .section-banner {
    margin-top: -20px;
}

/*mobile*/


.header-mb .navbar {
    display: flex;
    justify-content: center;
    border-bottom: 2px solid #FF0000;
    background: #FFFFFF;
}

    .header-mb .navbar .container {
        display: flex;
        justify-content: center;
        gap: 10px;
    }

    .header-mb .navbar .logo-mb {
        width: 110px
    }

    .header-mb .navbar .logo-relation {
        width: 40px;
    }

    .header-mb .navbar .logo-ambassador {
        width: 110px
    }

    .header-mb .annoucement .video-player-container {
        display: flex;
        gap: 20px;
        flex-direction: column;
    }

.header-mb .annoucement .video-main {
    flex: 1;
}

    .header-mb .annoucement .video-main #mainVideo {
        width: 100%;
        border: 2px solid #FF0000;
        border-radius: 6px;
    }

    .header-mb .annoucement .video-main iframe {
        width: 100%;
        height: 500px;
    }

.header-mb .annoucement .video-playlist {
    width: 100%;
    max-width: 100%;
    overflow-x: scroll;
    border: 1px solid #ddd;
    padding: 10px;
    box-sizing: border-box;
    background-color: #f9f9f9;
}

    .header-mb .annoucement .video-playlist h4 {
        margin-top: 0;
        font-size: 16px;
        margin-bottom: 10px;
    }

.header-mb .annoucement #playlist {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    gap: 5px;
}

    .header-mb .annoucement #playlist li {
        cursor: pointer;
        position: relative;
        overflow: hidden;
        min-width: 150px;
        max-width: 155px;
    }

        .header-mb .annoucement #playlist li::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.4);
            z-index: 1;
        }
        .header-mb .annoucement #playlist li.selected {
            border: 2px solid #FF0000;
            border-radius: 4px;
        }
            .header-mb .annoucement #playlist li.selected::before {
                opacity: 0;
                pointer-events: none;
            }
        .header-mb .annoucement #playlist li img {
            width: 100%;
            height:auto;
            transition: transform 0.2s;
        }

        .header-mb .annoucement #playlist li:hover img {
            transform: scale(1.03);
            border-color: #007bff;
        }


.header-mb .menu-group {
    margin-top: 15px;
    display: flex;
    gap: 15px;
    justify-content: center;
}

.header-mb .menu-item {
    font-weight: 700;
    font-size: 12px;
    line-height: 100%;
    letter-spacing: 0;
    text-align: center;
    color: #fff;
    padding: 7px 20px;
    max-width: 190px;
    width: 100%;
    border-radius: 39px;
    overflow: hidden;
    background: #F40000;
    display: flex;
    align-items: center;
    justify-content: center;
}

@media (max-width:1000px) {
    .header-mb .annoucement .video-player-container {
        gap: 2px;
    }
}

@media (max-width: 425px) {
    .header-mb .menu-item {
        padding: 5px 20px;
        max-width: 150px;
    }
}