.mod-panel{
    margin: 0;
    padding: 8px 8px 12px;
    min-height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
}
.mod-panel canvas{
    display:block;
    margin: 0 auto;
    background: #000;
    border-radius: 12px;
    width: min(100%, calc((100dvh - 188px) * 1.5));
    height: auto;
    touch-action: none;
}
html.arena-wait .chomp-pad { visibility: hidden; }
.chomp-pad{
    position: fixed;
    left: 50%;
    bottom: 10px;
    transform: translateX(-50%);
    z-index: 6;
    display: grid;
    grid-template-columns: 72px 72px 72px;
    grid-template-areas: ". up ." "left down right";
    gap: 8px;
    touch-action: manipulation;
    user-select: none;
}
.chomp-pad button{
    height: 58px;
    border: 0;
    border-radius: 14px;
    background: #ffe600;
    color: #1a1400;
    font: 800 26px/1 system-ui, sans-serif;
    box-shadow: 0 4px 0 #b89b00;
}
.chomp-pad button[data-key="38"]{ grid-area: up; }
.chomp-pad button[data-key="37"]{ grid-area: left; }
.chomp-pad button[data-key="40"]{ grid-area: down; }
.chomp-pad button[data-key="39"]{ grid-area: right; }
.chomp-pad button:active{ transform: translateY(2px); box-shadow: 0 2px 0 #b89b00; }
.mod-panel .info{
    padding: 10px 0;
    margin-bottom: 5px;
    line-height: 20px;
    text-align: center;
    color: #666;
}
.mod-panel .info p{
    line-height: 26px;
    font-size: 16px;
    color: #666;
}

.mod-introtion .hd{
    margin-bottom: 10px;
    padding: 15px 20px;
    background: linear-gradient(45deg, #eef2f9, transparent);
    border-top-left-radius: 8px;
    border-bottom-left-radius: 8px;
}
.mod-introtion .hd .title{
    line-height: 32px;
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
    text-shadow: 2px 1px 0 #cccccc;
}
.mod-introtion .hd .title a{
    color: var(--primary-color);
}
.mod-introtion .hd .subtitle{
    position: relative;
    line-height: 20px;
    font-size: 20px;
    font-weight: bold;
    color: var(--text-color);
    opacity: 0.8;
}
.mod-introtion .bd{
    padding: 15px 20px;
    background-color: rgba(0, 0, 0, 0.02);
    border: 1px solid rgba(0, 0, 0, 0.02);
    border-radius: 8px;
}
.mod-introtion .bd p{
    margin-bottom: 12px;
    line-height: 26px;
    text-indent: 2em;
    font-size: 16px;
    color: #666;
}
.mod-introtion .bd p:last-child{
    margin-bottom: 0;
}

.mod-button{
    height: 32px;
    padding: 15px 0;
    margin-bottom: 15px;
    text-align: center;
}
.mod-button span,.mod-button a{
    display: inline-block;
    height: 28px;
    vertical-align: middle;
}
.mod-button .btn{
    display: inline-block;
    height: 26px;
    padding: 0 12px;
    line-height: 26px;
    background-color: #ebf0f4;
    border: 1px solid #d1d9e0;
    text-decoration: none;
    font-weight: bold;
    font-size: 13px;
    color: #25292e;
    border-radius: 3px;
}
.mod-button .btn:hover{
    background: #f5f6f7;
}


@media screen and (max-width: 800px){
    .mod-panel canvas{
        width: 100%;
        border-radius: 8px;
    }

    .mod-panel .info p{
        line-height: 20px;
        font-size: 14px;
    }

    .mod-introtion .hd{
        padding: 12px 15px;
    }
    .mod-introtion .hd .title{
        line-height: 24px;
        font-size: 20px;
    }
    .mod-introtion .hd .subtitle{
        line-height: 18px;
        font-size: 16px;
    }
    .mod-introtion .bd p{
        line-height: 24px;
        font-size: 15px;
    }
}