* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
:root {
    --white--: #fff;
    --black--: #000;
    --red--: #d30707;
}
body,html {
    height: 100%;
    overflow: hidden;
    background: linear-gradient(135deg,#f37474 10%,#eb0e0e 90%);
}
.ls-container {
    height: 100%;
    width: 100%;
    animation: background 100s infinite ease-in-out;
    color: var(--white--);
    overflow-x: hidden;
    display: flex;
    justify-content: space-around;
    flex-direction: column;
    align-items: center;
}
.ls-header {
    margin-top: 40px;
    text-align: center;
    width: 100%;
    display: flex;
    justify-content: center;
    flex-direction: column;
}
.ls-header-logo {
    max-width: 100px;
    display: block;
    margin: auto;
}
.ls-header-title {
    margin: 10px 0;
    letter-spacing: 2px;
    font-size: 23px;
    font-weight: bold;
    font-family: "幼圆","楷体";
}
.ls-content {
    width: 80%;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    text-align: center;
    margin: auto;
}
.ls-content-btn-group {
    margin-top: 20px;
}
.ls-content-btn {
    outline: none;
    border: none;
    background: linear-gradient(135deg,#c15df0 10%,#a90cda 90%);
    transition: all .3s ease-in;
    padding: 8px 16px;
    color: var(--white--);
    font-size: 16px;
    border-radius: 6px;
    letter-spacing: 1px;
    cursor: pointer;
    margin-right: 1rem;
}
.ls-content-btn:not(.ls-disabled):hover {
    background: linear-gradient(135deg,#c777ec 10%,#740297 90%);
}
.ls-content-text {
    margin-bottom: 15px;
    letter-spacing: 2px;
    font-family: "华文琥珀","楷体";
}
.ls-footer {
    margin-bottom: 100px;
    font-size: 14px;
    display: flex;
    justify-content: space-between;
}
.ls-footer-heart {
    width: 20px;
    height: 20px;
    background-color: var(--red--);
    position: relative;
    transform: rotate(45deg);
    margin-left: 15px;
    animation: scale .3s infinite cubic-bezier(0.075, 0.82, 0.165, 1);
}
.ls-footer-heart::before,.ls-footer-heart::after {
    content: "";
    position: absolute;
    width: 100%;
    height: 100%;
    background-color: var(--red--);
    border-radius: 50%;
}
.ls-footer-heart::before {
    left: -10px;
    top: 0;
}
.ls-footer-heart::after {
    top: -10px;
    left: 0;
}
.ls-loading > dot {
    height:1em;
    overflow:hidden;
    display:inline-block;
    text-align:left;
    vertical-align:-.25em;
    line-height:1;
}
.ls-loading > dot:before {
    display:block;
    content:'...\A..\A.';
    white-space:pre-wrap;
    animation:dot 3s infinite step-start both;
}
.ls-disabled {
    cursor: not-allowed;
    background: linear-gradient(135deg,#dbdbdb 10%,#7c7c7c 90%);
    color: #e6e6e6;
}
@keyframes dot {
    33% {
        transform:translateY(-2em);
    }
    66% {
        transform:translateY(-1em);
    }
}

@keyframes background {
    0% {
        background: linear-gradient(135deg,#7bb2e9 10%,#0977e6 90%);
    }
    25% {
        background: linear-gradient(135deg,#f3976d 10%,#e67f0a 90%);
    }
    50% {
        background: linear-gradient(135deg,#8583f1 10%,#1f11eb 90%);
    }
    75% {
        background: linear-gradient(135deg,#eb75e5 10%,#e214af 90%);
    }
    100% {
        background: linear-gradient(135deg,#f37474 10%,#eb0e0e 90%);
    }
}
@keyframes scale {
    from {
        transform: rotate(45deg) scale(1);
    }
    to {
        transform: rotate(45deg) scale(1.2);
    }
}