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

body {
    min-height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #fff;
    font-family: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
    -webkit-font-smoothing: antialiased;
}

/* 隱藏原本系統的錯誤訊息 */
#divErrMsg {
    display: none;
}

.container {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0;
    /* max-width: 480px; */
    width: 100%;
}

.banner {
    width: min(85vw, 400px);
    height: auto;
    display: block;
}

.title {
    margin-top: 1.5rem;
    font-size: clamp(1.5rem, 5vw, 2rem);
    font-weight: 700;
    color: #3a3478;
    letter-spacing: .06em;
}

.desc {
    margin-top: .75rem;
    font-size: clamp(.9rem, 3.2vw, 1.1rem);
    color: #8b85b8;
    text-align: center;
    line-height: 1.7;
    letter-spacing: .03em;
}

.back-btn {
    margin-top: 1.75rem;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: none;
    background: #3a3478;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: transform .2s, background .2s;
}

.back-btn:hover {
    background: #4e47a0;
}

.back-btn:active {
    transform: scale(.92);
}

.back-btn svg {
    width: 22px;
    height: 22px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2.4;
    stroke-linecap: round;
    stroke-linejoin: round;
}