@charset "utf-8";
/* CSS Document */
*{ box-sizing: border-box;}
html{ width: 100%; overflow-x: hidden;}
body { font:14px "microsoft Yahei","Arial",sans-serif; color: #333; line-height: 1.4; word-wrap:break-word; -webkit-tap-highlight-color:rgba(0,0,0,0); -webkit-text-size-adjust: none; box-sizing: border-box; }
body,form,input,p,ol,ul,li,h1,h2,h3,h4,h5,h6,table,th,td,dl,dt,dd{padding:0;margin:0;}
img{border:0; vertical-align: middle;}
ul,li{list-style:none;}
dl,dt,dd{display: block;}
a{text-decoration:none; transition: 0.4s; -webkit-transition: 0.4s; outline: none;}
input,textarea{ box-sizing: border-box; outline:none;  border: 0; background:none; font:14px "microsoft Yahei","Arial",sans-serif; width: 100%; }
input[type="button"], input[type="submit"], input[type="text"] {-webkit-appearance: none; outline: none; }
h2{font-weight:400;}
i{ font-style:normal;}
b{ font-weight:normal;}
video{object-fit: cover;}

/*文本框placeholder=""文字颜色*/
input::-webkit-input-placeholder,textarea::-webkit-input-placeholder {color: #333; opacity: 1}
input:-moz-placeholder, textarea:-moz-placeholder {color: #333; opacity: 1}
input::-moz-placeholder, textarea::-moz-placeholder {color: #333; opacity: 1}
input:-ms-input-placeholder, textarea:-ms-input-placeholder {color: #333; opacity: 1}


/* 隐藏滚动条 */
::-webkit-scrollbar{ display: none; width: 0 !important}

/* 公用变量 */
:root {
    --base-font-size: 80px;
}
/* 自定义通用类 */
.flex{display: flex;align-items: center;}
.part_wrap{width: 75%;margin: 0 auto;position: relative;}
/* 页面效果 */
.scrollbox .often_anima{ opacity: 0; transition: 1s;}
.scrollbox .often_anima:nth-child(1){ transition-delay: 0s;}
.scrollbox .often_anima:nth-child(2){ transition-delay: 0.2s;}
.scrollbox .often_anima:nth-child(3){ transition-delay: 0.4s;}
.scrollbox .often_anima:nth-child(4){ transition-delay: 0.6s;}
.scrollbox .often_anima:nth-child(5){ transition-delay: 0.8s;}
.scrollbox .often_anima:nth-child(6){ transition-delay: 1s;}
.scrollbox .often_anima:nth-child(7){ transition-delay: 1.2s;}
.scrollbox .often_anima:nth-child(8){ transition-delay: 1.4s;}
.scrollbox .often_anima:nth-child(9){ transition-delay: 1.6s;}

.scrollbox .often_anima_scale{ transform: scale(0.9);}
.scrollbox .often_anima_left{ transform: translateX(-30px);}
.scrollbox .often_anima_right{ transform: translateX(30px);}
.scrollbox .often_anima_top{ transform: translateY(-60px);}
.scrollbox .often_anima_bottom{ transform: translateY(80px);}
.scrollbox .often_anima_opacity{ opacity: 0.6;}
.scrollbox.on .often_anima{ transform: translate(0) scale(1) !important; opacity: 1 !important;}