*, *::after, *::before {
    margin: 0;
    padding: 0;
}

a {
    text-decoration: none;
    color: unset;
}

window.onload=function(){
    var $msg = "请尊重劳动成果！www.kumic.cn";
    document.onkeydown=function(){
        var e = window.event||arguments[0];
        if(e.keyCode==123){
            //F12
            alert($msg);
            return false;
        }else if((e.ctrlKey)&&(e.shiftKey)&&(e.keyCode==73)){
            //ctrl + shift + i
            alert($msg);
            return false;
        }else if((e.ctrlKey)&&(e.keyCode==85)){
            //ctrl + U
            alert($msg);
            return false;
        }else if((e.ctrlKey)&&(e.keyCode==83)){
            //ctrl + U
            alert($msg);
            return false;
        }
    }
    document.oncontextmenu=function(){
        //右击
        alert($msg);
        return false;
    }
}

body {
    min-height: 100vh;
    min-width: 1047px;
    background: linear-gradient(135deg, rgba(255, 250, 254, 1) 0%, rgba(255, 232, 226, 0.811) 100%)
}

mark {
    background-color: transparent;
    color: inherit;
    background-image: linear-gradient(var(--default-color), var(--default-color));
    background-repeat: no-repeat;
    background-size: 0% 38%;
    background-position: 0 100%;
}

mark.animate {
    animation: 2s highlight var(--default-bezier-start) forwards;
    animation-delay: 1.5s;
}

@keyframes highlight {
    to {
        background-size: 100% 38%;
    }
}

.index {
    background-image: url(https://source.unsplash.com/2560x1440/?encryption,natural);
    width: 100%;
    height: 100vh;
    background-color: #cedbe4;
    background-size: cover;
    background-position: center;
    overflow: hidden;
}

.index::before {
    z-index: -1;
    position: absolute;
    content: "";
    background-image: url(https://source.unsplash.com/2560x1440/?encryption,natural);
    width: 100%;
    height: 100vh;
    background-color: #cedbe4;
    background-size: cover;
    background-position: center;
    filter: blur(20px)saturate(180%)opacity(50%);
    transform: translateY(20px);
}

.nav {
    position: fixed;
    z-index: 10;
    width: 100%;
    height: 70px;
    -webkit-backdrop-filter: blur(20px)saturate(180%);
    backdrop-filter: blur(20px)saturate(180%);
    background-color: var(--box-white-1);
    display: flex;
    align-items: center;
}

.nav-content {
    width: 100%;
    height: 30px;
    margin: 0 75px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-content>a {
    height: 100%;
}

.nav-box {
    display: flex;
    align-items: center;
    width: 50%;
    justify-content: flex-end;
    height: 100%;
}

.nav-box>a>div {
    margin-left: 30px;
    width: 75px;
    padding: 0;
    height: 30px;
}

.url-box-color {
    background-color: var(--default-color);
    padding: 10px 25px;
    border-radius: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-white);
    font-weight: var(--fw-Semibold);
    transition: 0.3s var(--default-bezier-start);
}

.url-box-color2 {
    background-color: var(--default-color-t);
    padding: 10px 25px;
    border-radius: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-white);
    font-weight: var(--fw-Semibold);
    transition: 0.3s var(--default-bezier-start);
}

.url-box-color:hover {
    background-color: var(--default-color-focus);
}

.url-box-transparent {
    background-color: var(--box-black-5);
    padding: 10px 25px;
    border-radius: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-black);
    font-weight: var(--fw-Semibold);
    transition: 0.3s var(--default-bezier-start);
}

.url-box-transparent:hover {
    background-color: var(--box-black-4);
}

.url-box-blur {
    background-color: var(--box-white-3);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    padding: 10px 25px;
    border-radius: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-white);
    text-shadow: 0 0 10px var(--shadow-2);
    font-weight: var(--fw-Semibold);
    transition: 0.3s var(--default-bezier-start);
}

.url-box-color:active, .url-box-transparent:active, .url-box-blur:active {
    opacity: 0.5;
    transform: scale(90%);
    transition: 0.1s var(--default-bezier-start);
}

.titile {
    width: 100%;
    height: 100%;
    position: absolute;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    color: var(--text-white);
}

.all-logo {
    z-index: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    transform: translateY(150px);
    animation: 1.5s all-logo cubic-bezier(.5, 0, .25, 1) forwards;
    animation-delay: 1s;
}

@keyframes all-logo {
    50% {
        transform: translateY(150px);
    }

    100% {
        transform: translateY(0px);
    }
}

.logo-bg {
    width: 650px;
    opacity: 0;
    filter: blur(10px);
    animation: 1.2s logo-bg cubic-bezier(.74, .34, .5, 1) forwards;
    animation-delay: 1s;
}

@keyframes logo-bg {
    25% {
        opacity: 1;
    }

    100% {
        width: 70px;
        opacity: 1;
        filter: blur(0px);
    }
}

.logo {
    position: absolute;
    opacity: 0;
    width: 550px;
    filter: blur(10px);
    animation: 1.2s logo cubic-bezier(.66, .4, .25, 1) forwards;
    animation-delay: 1s;
}

@keyframes logo {
    50% {
        opacity: 1;
    }

    100% {
        width: 50px;
        opacity: 1;
        filter: blur(0px);
    }
}

.title-txt {
    text-align: center;
}

.title-p0 {
    opacity: 0;
    animation: 1s p0 cubic-bezier(.25, .78, .5, 1) forwards;
    animation-delay: 2.5s;
}

@keyframes p0 {
    to {
        opacity: 1;
    }
}

.title-p1 {
    opacity: 0;
    margin-top: 5px;
    transform: translateY(50px);
    animation: 0.5s p1 cubic-bezier(.25, .78, .5, 1) forwards;
    animation-delay: 2.2s;
}

.title-p2 {
    margin-top: 3px;
    transform: translateY(50px);
    animation: 0.6s p2 cubic-bezier(.25, .78, .5, 1) forwards;
    animation-delay: 2.25s;
    opacity: 0;
}

@keyframes p1 {
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes p2 {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.page {
    padding: 50px 75px;
}

.whitebox {
    margin-bottom: 50px;
    border-radius: 20px;
    padding: 20px;
    background-color: white;
    display: flex;
    justify-content: space-between;
}

.whitebox-down {
    position: relative;
    align-items: center;
}

.whitebox-text {
    margin: 0 15px;
    width: 40%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: flex-start;
    color: #dd4814;
}

.whitebox-text-right {
    margin: 0 15px;
    width: 40%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: flex-end;
}

.whitebox-text-right>div {
    text-align: right;
}

.whitebox-text>div>div:nth-child(2), .whitebox-text-right>div>div:nth-child(2) {
    margin-top: 10px;
    color: var(--box-black-1);
}

.down {
    padding: 50px 75px;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    color: var(--text-black);
}

.down-text {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--box-black-1);
}

.down-title {
    width: 100%;
    margin-top: 20vh;
    position: absolute;
    display: flex;
    justify-content: center;
    align-items: stretch;
    flex-direction: column;
    color: var(--text-white);
}

.txt-t {
    color: var(--default-color);
}

.about-txt::before {
    top: 20px;
    transform: scale(200%);
    font-size: 56px;
    color: var(--text-black-3);
    position: absolute;
    content: "“";
}

/* iThink的统一调用库 */
:root {
    --default-color: rgb(30, 153, 235);
    --default-color-t: rgba(30, 153, 235, 0.841);
    --default-colo-16: #1e99eb;
    --default-color-opacity: rgba(30, 153, 235, 0);
    --default-color-focus: rgb(44, 162, 241);
    --default-color-shadow: rgba(19, 108, 167, 0.25);

    --opacity: transparent;

    --text-white: rgba(255, 255, 255, 0.95);
    --text-white-1: rgba(255, 255, 255, 0.75);
    --text-white-2: rgba(255, 255, 255, 0.50);
    --text-white-3: rgba(255, 255, 255, 0.25);
    --text-black: rgba(0, 0, 0, 0.90);
    --text-black-1: rgba(0, 0, 0, 0.80);
    --text-black-2: rgba(0, 0, 0, 0.50);
    --text-black-3: rgba(0, 0, 0, 0.25);

    --box-white: rgba(255, 255, 255, 1);
    --box-white-1: rgba(255, 255, 255, 0.75);
    --box-white-2: rgba(255, 255, 255, 0.50);
    --box-white-3: rgba(255, 255, 255, 0.30);
    --box-white-4: rgba(255, 255, 255, 0.25);
    --box-white-5: rgba(255, 255, 255, 0.15);
    --box-white-6: rgba(255, 255, 255, 0.10);
    --box-black: rgba(0, 0, 0, 1);
    --box-black-1: rgba(0, 0, 0, 0.75);
    --box-black-2: rgba(0, 0, 0, 0.50);
    --box-black-3: rgba(0, 0, 0, 0.25);
    --box-black-4: rgba(0, 0, 0, 0.15);
    --box-black-5: rgba(0, 0, 0, 0.10);

    --shadow-1: rgba(0, 0, 0, 0.25);
    --shadow-2: rgba(0, 0, 0, 0.20);
    --shadow-3: rgba(0, 0, 0, 0.15);
    --shadow-4: rgba(0, 0, 0, 0.10);
    --shadow-5: rgba(0, 0, 0, 0.05);

    /* 祖传动画曲线 */
    --default-bezier-color: cubic-bezier(.6, 0, .5, 1);
    --default-bezier-start: cubic-bezier(.5, 0, .25, 1);
    --default-bezier-end: cubic-bezier(.5, 0, .5, 1);
    --default-bezier-nav-start: cubic-bezier(.25, .1, 0, 1);
    --default-bezier-nav-end: cubic-bezier(.5, .25, .4, 1);
    --default-bezier-ios-start: cubic-bezier(.25, 1, .25, 1);
    --default-bezier-ios-end: cubic-bezier(.48, 1.23, .25, 1);
    --default-bezier-apple-nav: cubic-bezier(0.28, 0.11, 0.32, 1);
}