html, body {
    margin: 0;
    padding: 0;
    background: #1a1a1a;
    font-family: "Microsoft JhengHei", "微軟正黑體", sans-serif;
    color: #fff;
}

h1.page-title {
    text-align: center;
    margin: 24px 0 16px;
    font-size: 32px;
}

.seven-segment {
    display: inline-block;
    width: 70px;
    height: 100px;
    background-color: black;
    overflow: hidden;
    position: relative;
}

.seven-segment:before {
    content: "";
    width: 32px;
    height: 10px;
    display: block;
    position: absolute;
    top: -20px;
    left: 20px;
    background-color: red;
}

.seven-segment:after {
    content: "";
    width: 10px;
    height: 30px;
    display: block;
    position: absolute;
    top: 17px;
    left: -19px;
    background-color: red;
}

.seven-segment[data-number="0"]:before {
    box-shadow: 0 25px 0 red, 0 105px 0 red;
}

.seven-segment[data-number="0"]:after {
    box-shadow: 25px 0 red, 75px 0 0 red, 25px 35px red, 75px 35px 0 red;
}

.seven-segment[data-number="1"]:after {
    box-shadow: 75px 0 red, 75px 35px red;
}

.seven-segment[data-number="2"]:before,
.seven-segment[data-number="3"]:before,
.seven-segment[data-number="5"]:before,
.seven-segment[data-number="8"]:before,
.seven-segment[data-number="9"]:before {
    box-shadow: 0 25px 0 red, 0 65px 0 red, 0 105px 0 red;
}

.seven-segment[data-number="2"]:after {
    box-shadow: 75px 0 0 red, 25px 35px red;
}

.seven-segment[data-number="3"]:after {
    box-shadow: 75px 0 0 red, 75px 35px 0 red;
}

.seven-segment[data-number="4"]:before {
    box-shadow: 0 65px 0 red;
}

.seven-segment[data-number="4"]:after {
    box-shadow: 25px 0 red, 75px 0 0 red, 75px 35px 0 red;
}

.seven-segment[data-number="5"]:after {
    box-shadow: 25px 0 red, 75px 35px 0 red;
}

.seven-segment[data-number="6"]:before {
    box-shadow: 0 65px 0 red, 0 105px 0 red, 0 25px 0 red;
}

.seven-segment[data-number="6"]:after {
    box-shadow: 25px 0 red, 25px 35px red, 75px 35px 0 red;
}

.seven-segment[data-number="7"]:before {
    box-shadow: 0 25px 0 red;
}

.seven-segment[data-number="7"]:after {
    box-shadow: 75px 0 red, 75px 35px red;
}

.seven-segment[data-number="8"]:after {
    box-shadow: 25px 0 red, 75px 0 0 red, 25px 35px red, 75px 35px 0 red;
}

.seven-segment[data-number="9"]:after {
    box-shadow: 25px 0 red, 75px 0 red, 75px 35px 0 red;
}

.d-flx {
    display: flex;
    align-items: center;
    justify-content: center;
}

.seven-box {
    display: flex;
    justify-content: center;
    flex-direction: column;
    background: black;
    color: white;
    border-radius: 7px;
    width: fit-content;
    margin: 0 auto;
    padding: 20px 28px;
}

.seven-box h1 {
    margin: 0;
}

.label {
    width: 35px;
}

/* 連線中斷時整個面板淡出，提示資料未更新 */
.seven-box.stale {
    opacity: 0.35;
    transition: opacity .3s;
}

.status {
    text-align: center;
    margin-top: 14px;
    font-size: 14px;
    color: #9aa0a6;
}

.status.error {
    color: #ff6b6b;
}