#promo-overlay,#promo-popup{position:fixed;display:none}:root{--max-width:880px;--navbar-height:70px}*{box-sizing:border-box}h1,h2,h3{margin:0}body,html{margin:0;padding:0;width:100%;font-family:Inter,"Noto Sans","PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif}.navbar-container{background-color:#262626;height:var(--navbar-height);width:100%;z-index:99999;position:fixed;top:0;left:0;right:0;display:flex;align-items:center}.navbar{margin:0 auto;width:100%;max-width:var(--max-width);padding:0 15px;display:flex;justify-content:space-between;align-items:center}.navbar .logo{color:#fff;font-size:24px;font-weight:700;text-decoration:none}.navbar .menu{display:flex;gap:20px}.navbar .menu-item>a{color:#fff;text-decoration:none;display:block}.navbar .menu-item:hover{text-decoration:underline}#language-select{width:120px}.navbar .icon{display:none;font-size:30px;color:#fff;cursor:pointer}#promo-overlay{top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0);z-index:9999999}#promo-popup{background-color:#fff;border-radius:12px;box-shadow:0 10px 25px rgba(0,0,0,.3);width:230px;text-align:center;bottom:50%;right:50%;transform:translate(50%,50%);cursor:pointer;overflow:hidden;z-index:99999999;transition:all .8s ease}#promo-popup img{width:100%;display:block}#promo-popup .text{font-size:15px;color:#333;padding:15px}.icon-box i,.icon-box:visited i{color:#374151}#promo-popup .close-btn{position:absolute;top:10px;right:15px;cursor:pointer;font-size:20px;font-weight:700;z-index:10;display:none}.description-section{padding:20px 0}.description-section-item{margin:15px 0 20px}.description-section-item ul{padding-left:15px;list-style:decimal}.description-section-item ul li{margin-bottom:5px}.box-4-row{grid-template-columns:repeat(4,120px);display:flex;flex-wrap:nowrap;gap:12px;overflow-x:auto;overflow-y:hidden;-webkit-overflow-scrolling:touch;justify-content:center;padding:4px 2px}.icon-box{flex:0 0 80px;height:50px;background:#fff;border:1px solid #e5e7eb;border-radius:12px;display:flex;align-items:center;justify-content:center;text-decoration:none;cursor:pointer;transition:all .2s ease}.icon-box i{font-size:28px}.icon-box:hover{border-color:#2563eb;box-shadow:0 6px 16px rgba(0,0,0,.08)}.box-4-row::-webkit-scrollbar{height:6px}.box-4-row::-webkit-scrollbar-thumb{background:#d1d5db;border-radius:4px}.box-4-row::-webkit-scrollbar-track{background:0 0}.footer-container{background:#f4f4f4;text-align:center;position:fixed;bottom:0;width:100%;z-index:999999;font-size:14px;color:#615858;padding:5px 0}@media screen and (max-width:768px){.navbar .menu{display:flex;flex-direction:column;width:100%;background-color:#333;position:absolute;top:60px;left:0;overflow:hidden;max-height:0;transition:max-height .1s linear;gap:10px}.navbar .menu .menu-item{text-align:left;padding:10px 15px}.navbar .icon{display:block}.navbar.responsive .menu{max-height:300px}.section-group{width:90%}.download-setion{padding-top:50px;padding-bottom:20px}.description-section{padding:15px}}