.x3-hero .x-hero-content{max-width:690px}.x3-home-products{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.x3-card,.x3-product{background:#f5f6f7;border-radius:22px;overflow:hidden;transition:.3s}.x3-card:hover,.x3-product:hover{transform:translateY(-5px);box-shadow:0 18px 50px rgba(0,0,0,.08)}.x3-card img,.x3-product img{width:100%;aspect-ratio:4/3;object-fit:cover}.x3-card>div,.x3-product-copy{padding:22px}.x3-card small,.x3-product small,.x3-support-card small{color:#06f;font-weight:700;letter-spacing:.08em}.x3-card h3,.x3-product h2{font-size:24px;margin:8px 0}.x3-card p,.x3-product p{color:#666;line-height:1.6}.x3-card span,.x3-product span{color:#06f;font-weight:700}.x3-center{text-align:center;margin-top:38px}.x3-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.x3-steps>div{background:#fff;border-radius:20px;padding:30px;border:1px solid #e4e6e9}.x3-steps b{color:#06f}.x3-steps h3{font-size:23px}.x3-steps p{color:#68707a;line-height:1.7}.x3-dark{background:linear-gradient(135deg,#eef4ff,#f5f7fa);color:#171a1f;border:1px solid #dce6f3;border-radius:28px;padding:70px;display:flex;justify-content:space-between;align-items:center}.x3-dark h2{font-size:52px;margin:8px 0}.x3-dark p{color:#5f6874}.x3-page-head{padding:100px 0 70px;background:#f4f5f7}.x3-page-head h1,.x3-about-hero h1{font-size:clamp(48px,6vw,84px);letter-spacing:-.055em;margin:10px 0}.x3-page-head p,.x3-about-hero p{font-size:19px;color:#60656d;max-width:700px;line-height:1.7}.x3-catalog{display:grid;grid-template-columns:220px 1fr;gap:44px;padding-top:70px;padding-bottom:120px}.x3-filter{position:sticky;top:100px;align-self:start}.x3-filter h3{margin:0 0 18px}.x3-filter a{display:flex;justify-content:space-between;padding:13px 14px;border-radius:10px;color:#676c74}.x3-filter a.active,.x3-filter a:hover{background:#0066ff;color:#fff}.x3-product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.x3-product-copy h2{font-size:20px}.x3-product-copy p{font-size:14px}.x3-empty{padding:50px;background:#f5f6f7;border-radius:18px}.x3-detail{padding:90px 0 120px}.x3-detail-hero{display:grid;grid-template-columns:1.2fr 1fr;gap:70px;align-items:center}.x3-detail-img img{width:100%;border-radius:28px;background:#f4f5f6}.x3-detail-copy h1{font-size:clamp(46px,5vw,72px);margin:10px 0}.x3-detail-copy>p{font-size:18px;color:#626870;line-height:1.7}.x3-detail-copy dl{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:#e3e5e8;margin:30px 0}.x3-detail-copy dl div{background:#fff;padding:16px}.x3-detail-copy dt{font-size:12px;color:#8a8e95}.x3-detail-copy dd{margin:6px 0 0;font-weight:700}.x3-price{font-weight:700}.x3-detail-body{margin:80px auto 0}.x3-tabs{display:flex;gap:10px;flex-wrap:wrap;margin-top:36px}.x3-tabs a{padding:10px 18px;border-radius:999px;background:#fff}.x3-tabs a.active{background:#0066ff;color:#fff}.x3-support-grid{padding-top:60px;padding-bottom:120px;display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.x3-support-card{border:1px solid #e1e3e6;border-radius:20px;padding:28px;display:grid;grid-template-columns:48px 1fr;gap:18px;min-height:240px}.x3-support-icon{width:48px;height:48px;border-radius:14px;background:#0066ff;color:#fff;display:grid;place-items:center;font-size:20px}.x3-support-card h2{font-size:22px}.x3-support-card p{color:#69707a;line-height:1.6}.x3-support-card>.x-link{grid-column:2}.x3-video{width:100%;max-height:640px;background:#eef2f6;border-radius:18px;margin-bottom:45px}.x3-about-hero{padding:120px 0;background:#f4f5f7}.x3-about-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:80px}.x3-about-grid h2{font-size:48px}.x3-about-grid p{font-size:18px;line-height:1.8;color:#646a72}.x3-contact{background:#eef3f8;color:#171a1f;border:1px solid #dce4ee;border-radius:24px;padding:40px}.x3-contact a{font-size:24px}.x3-contact p{color:#66707c}.x3-socials{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}.x3-socials a{background:#fff;border:1px solid #e1e3e6;border-radius:18px;padding:24px;display:grid;gap:8px}.x3-socials span{width:42px;height:42px;border-radius:50%;background:#0066ff;color:#fff;display:grid;place-items:center}.x3-socials small{color:#777;word-break:break-all}
/* Navigation and in-page filtering */
@media(min-width:901px){.x-nav{position:relative}.x-menu{position:absolute;left:50%;transform:translateX(-50%);font-size:17px}.x-menu ul{gap:42px}}
.x-menu .current-menu-item>a,.x-menu .current_page_item>a{color:#0066ff}.x-menu .current-menu-item>a:after,.x-menu .current_page_item>a:after{right:0;background:#0066ff}
.x3-filter button{display:flex;justify-content:space-between;width:100%;padding:13px 14px;border:0;border-radius:10px;color:#676c74;background:transparent;font:inherit;text-align:left;cursor:pointer}.x3-filter button.active,.x3-filter button:hover{background:#0066ff;color:#fff}.x3-tabs button{padding:10px 18px;border:0;border-radius:999px;background:#fff;font:inherit;cursor:pointer}.x3-tabs button.active{background:#0066ff;color:#fff}.x3-product[hidden],.x3-support-card[hidden],.x3-empty[hidden]{display:none!important}.x3-search{display:flex;gap:10px;max-width:680px;margin-top:28px}.x3-search input{flex:1;min-width:0;height:48px;border:1px solid #d5d8dd;border-radius:999px;padding:0 20px;font:inherit;background:#fff;outline:none}.x3-search input:focus{border-color:#0066ff;box-shadow:0 0 0 3px rgba(0,102,255,.12)}.x3-search button{height:48px;padding:0 24px;border:0;border-radius:999px;background:#0066ff;color:#fff;font:inherit;font-weight:700;cursor:pointer}.x3-search .x3-search-clear{background:#fff;color:#555;border:1px solid #d5d8dd}.x3-social-icon img{width:24px;height:24px;display:block}.x3-social-wechat .x3-social-icon{background:#07c160}.x3-social-douyin .x3-social-icon{background:#111;box-shadow:inset 3px 0 #25f4ee,inset -3px 0 #fe2c55}.x3-social-bilibili .x3-social-icon{background:#00aeec}.x3-social-xiaohongshu .x3-social-icon{background:#ff2442}.x3-social-weibo .x3-social-icon{background:linear-gradient(135deg,#ff8200,#e6162d)}
@media(max-width:1100px){.x3-home-products,.x3-product-grid{grid-template-columns:repeat(2,1fr)}.x3-support-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:760px){.x3-home-products,.x3-product-grid,.x3-steps,.x3-support-grid,.x3-socials{grid-template-columns:1fr}.x3-dark{padding:42px 28px;display:block}.x3-dark h2{font-size:38px}.x3-catalog{grid-template-columns:1fr;padding-top:36px}.x3-filter{position:static;display:flex;overflow:auto;gap:8px}.x3-filter h3{display:none}.x3-filter a{white-space:nowrap;background:#f1f2f4}.x3-detail-hero,.x3-about-grid{grid-template-columns:1fr;gap:35px}.x3-detail-copy dl{grid-template-columns:1fr}.x3-page-head,.x3-about-hero{padding:70px 0 48px}.x3-filter button{white-space:nowrap;background:#f1f2f4;width:auto}}@media(max-width:900px){.x-menu{left:0;transform:none;font-size:16px}}