*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:#252B3A;font:16px/1.8 Arial,"PingFang SC","Microsoft YaHei",sans-serif;background:#fff}a{color:inherit;text-decoration:none}a:hover{color:#315CFF}button{font:inherit;cursor:pointer}img{display:block;max-width:100%}.shell{width:min(1160px,calc(100% - 48px));margin:auto}h1,h2,h3{line-height:1.38;color:#17213A;margin:0 0 16px}h1{font-size:36px}h2{font-size:25px}h3{font-size:19px}p{margin:0 0 17px}a:focus-visible,button:focus-visible{outline:3px solid #6B8DFF;outline-offset:3px}.site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.96);box-shadow:0 1px 9px #17213A0b}.site-top{height:70px;display:flex;align-items:center;gap:28px}.logo-link{width:140px;flex-shrink:0;font-size:23px;font-weight:800;color:#315CFF}.logo-media{display:flex;align-items:center;background:transparent;width:100%;max-width:160px;height:38px}.logo-media img{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain}.desktop-nav{display:flex;align-items:center;gap:22px;white-space:nowrap;margin-left:auto}.desktop-nav a{height:70px;display:flex;align-items:center;position:relative;font-size:14px;font-weight:600}.desktop-nav a.active,.subnav a.active{color:#315CFF}.desktop-nav a.active:after{position:absolute;content:'';height:2px;background:#315CFF;left:0;right:0;bottom:12px}.main-btn{display:inline-flex;align-items:center;justify-content:center;min-width:80px;height:40px;padding:0 18px;border-radius:999px;background:#315CFF;color:#fff;font-weight:700;white-space:nowrap}.main-btn:hover{color:#fff;background:#244de2}.subbar{background:#F5F7FB}.subnav{display:flex;align-items:center;gap:0;overflow-x:auto;scrollbar-width:thin;white-space:nowrap;height:44px}.subnav a{padding:0 18px;font-size:13px;line-height:1.2;border-right:1px solid #dce3f1;color:#5F6B82}.subnav a:first-child{padding-left:0}.subnav a.active{color:#315CFF}.menu-open{display:none}.drawer-mask,.mobile-drawer{display:none}.section{margin:45px 0}.eyebrow{display:block;color:#315CFF;font-size:12px;font-weight:800;letter-spacing:.09em;margin:0 0 8px}.hero-carousel{height:300px;border-radius:14px;background:#EEF4FF;position:relative;overflow:hidden;margin-top:24px}.slides,.slide{height:100%;width:100%}.slide{display:none}.slide:first-child,.slide.is-active{display:flex;align-items:center;justify-content:center}.slide.is-active~.slide{display:none}.banner-media{height:100%;width:100%;display:flex;align-items:center;justify-content:center}.banner-media img{width:auto;height:auto;max-height:100%;max-width:100%;object-fit:contain}.carousel-prev,.carousel-next{position:absolute;top:50%;transform:translateY(-50%);border:0;border-radius:50%;width:36px;height:36px;background:#fffdfd;color:#17213A;font-size:30px;line-height:30px;box-shadow:0 1px 6px #17213A22}.carousel-prev{left:12px}.carousel-next{right:12px}.carousel-dots{position:absolute;bottom:12px;left:0;right:0;display:flex;justify-content:center;gap:8px}.carousel-dots button{width:9px;height:9px;border-radius:50%;border:0;background:#b2c0e4;padding:0}.carousel-dots button.active{background:#315CFF}.home-intro{display:grid;grid-template-columns:3fr 2fr;gap:55px;align-items:center}.home-intro p{font-size:17px;color:#5F6B82}.quick-links{border:1px solid #dfe7fb;border-radius:14px;padding:24px;background:#F8FAFF}.quick-links h2{font-size:19px}.quick-links a{display:block;padding:8px 0;border-bottom:1px solid #e2e9f6}.quick-links a:last-child{border:0}.section-title{display:flex;align-items:baseline;justify-content:space-between;gap:10px;margin-bottom:15px}.section-title a,.text-link{color:#315CFF;font-weight:700;font-size:14px}.section-lead{color:#5F6B82;max-width:900px}.category-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:17px}.category-item{border:1px solid #dfe7f8;border-radius:13px;padding:23px;background:#fff;display:flex;flex-direction:column;gap:7px;min-width:0;transition:box-shadow .2s,border-color .2s}.category-item:hover{box-shadow:0 6px 19px #315CFF12;border-color:#8ea7ff}.category-item strong{font-size:19px;color:#17213A}.category-item span{font-size:14px;color:#5F6B82}.feature-split{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center}.feature-split>div{min-width:0}.feature-split p{line-height:1.85}.media{display:flex;align-items:center;justify-content:center;min-width:0;width:100%;max-width:100%;overflow:hidden;border-radius:12px;background:#EEF4FF}.media img{display:block;width:auto;height:auto;max-width:100%;max-height:100%;object-fit:contain;object-position:center}.media-natural img{width:100%;height:auto;max-height:260px;object-fit:contain;margin:auto}.media-placeholder{min-height:115px;aspect-ratio:16/9}.mini-links{display:flex;flex-wrap:wrap;gap:12px;margin-top:18px}.mini-links a{font-size:14px;color:#315CFF;background:#EEF4FF;border-radius:20px;padding:5px 14px}.visual-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.visual-grid.single-visual{grid-template-columns:minmax(0,550px)}.visual-item{margin:0;min-width:0;padding:10px;border:1px solid #e3e9f5;border-radius:13px}.visual-item .media{min-height:110px}.visual-item .media-natural img{max-height:178px}.visual-item figcaption{font-size:13px;color:#5F6B82;padding:10px 4px 2px;line-height:1.55}.two-column{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:30px}.plain-panel{padding:28px;background:#EEF4FF;border-radius:13px}.plain-panel a{color:#315CFF;font-weight:700}.news-list{counter-reset:none;padding:0;list-style:none;border-top:1px solid #e1e7f4}.news-list li{border-bottom:1px solid #e1e7f4}.news-list a{display:flex;gap:25px;padding:15px 6px;align-items:baseline}.news-list b{min-width:100px;color:#17213A}.news-list span{color:#5F6B82;font-size:14px}.dual-images{display:grid;gap:12px;grid-template-columns:repeat(2,minmax(0,1fr))}.dual-images .media-natural img{max-height:200px}.knowledge{padding:30px;background:#F5F7FB;border-radius:14px}.app-image{max-width:360px;justify-self:center;width:100%}.media-device{height:300px}.media-device img{height:auto;width:auto;max-height:100%}.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px}.related-grid a{border:1px solid #dee6f8;padding:22px;border-radius:12px;display:flex;flex-direction:column;gap:7px}.related-grid a strong{font-size:17px;color:#17213A}.related-grid a span{font-size:14px;color:#5F6B82}.responsible-notice{border-left:3px solid #315CFF;padding:18px 24px;background:#F5F7FB}.responsible-notice a{color:#315CFF}.page-wrap{padding:28px 0 6px}.breadcrumbs{font-size:13px;color:#8190a8;margin-bottom:24px}.article-head{max-width:820px}.article-head h1{font-size:32px}.lead{font-size:17px;line-height:1.85;color:#5F6B82}.page-wrap>.visual-grid{margin:25px 0}.article-layout{display:grid;grid-template-columns:minmax(0,780px) minmax(210px,1fr);gap:42px;margin-top:28px;align-items:start}.article-body{min-width:0}.article-section{margin-bottom:34px}.article-section h2{font-size:23px;border-bottom:1px solid #e3e8f2;padding-bottom:12px;margin-bottom:15px}.article-section p{line-height:1.86}.side-panel{border:1px solid #e0e7f5;padding:20px;border-radius:12px;position:sticky;top:140px}.side-panel h2{font-size:18px}.side-panel a{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:12px 0;border-top:1px solid #edf0f6;font-size:14px}.side-panel small{white-space:nowrap;color:#8A95AA}.site-footer{background:#101828;color:#D8E0F2;margin-top:50px;padding:44px 0 18px}.footer-grid{display:grid;grid-template-columns:1.55fr 1fr 1fr 1fr;gap:32px}.site-footer h2{font-size:16px;color:#fff}.site-footer p{font-size:13px;color:#D8E0F2}.site-footer a{display:block;font-size:13px;padding:3px 0}.footer-brand{max-width:140px;margin-bottom:14px}.footer-bottom{border-top:1px solid #344157;margin-top:26px;padding-top:18px;display:flex;justify-content:space-between;gap:20px}.footer-bottom p{font-size:12px}.bottom-nav{display:none}.back-top{position:fixed;right:20px;bottom:22px;width:37px;height:37px;border-radius:50%;border:1px solid #dfe6f3;background:#fff;color:#315CFF;box-shadow:0 3px 12px #1b2b4819;opacity:0;pointer-events:none}.back-top.show{opacity:1;pointer-events:auto}@media(max-width:1100px){.site-top{gap:17px}.desktop-nav{gap:13px}.desktop-nav a{font-size:13px}.logo-link{width:125px}}@media(max-width:980px){.shell{width:calc(100% - 40px)}.site-top{height:58px;justify-content:space-between;gap:10px}.desktop-nav{display:none}.logo-link{margin:auto;text-align:center;max-width:145px;width:auto;min-width:0}.logo-media{height:29px;max-width:130px}.main-btn{min-width:68px;height:36px;padding:0 14px;font-size:13px}.menu-open{display:flex;flex-direction:column;justify-content:center;gap:5px;width:37px;height:37px;border:0;background:transparent;flex-shrink:0;padding:7px}.menu-open span{height:2px;background:#17213A;width:21px}.mobile-drawer{display:block;position:fixed;inset:0 auto 0 0;width:min(84vw,320px);height:100dvh;overflow-y:auto;background:#fff;z-index:12000;transform:translateX(-105%);visibility:hidden;pointer-events:none;transition:transform .2s ease,visibility .2s;padding:18px 20px 35px}.mobile-drawer.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-mask{display:block;position:fixed;inset:0;background:rgba(16,24,40,.42);z-index:11000;opacity:0;visibility:hidden;pointer-events:none;transition:opacity .2s ease,visibility .2s}.drawer-mask.is-visible{opacity:1;visibility:visible;pointer-events:auto}body.drawer-open{overflow:hidden}.drawer-head{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #e3eaf5;padding-bottom:12px}.drawer-brand{font-size:20px;font-weight:800;color:#315CFF}.menu-close{background:transparent;border:0;color:#17213A;font-size:30px}.mobile-drawer section{padding:18px 0 8px;border-bottom:1px solid #e8edf6}.mobile-drawer h2{font-size:14px;color:#6b7c97;margin:0 0 7px}.mobile-drawer a{min-height:42px;display:flex;align-items:center;font-size:15px}.mobile-drawer a.active{color:#315CFF;font-weight:700}.bottom-nav{display:flex;position:fixed;bottom:0;left:0;right:0;height:60px;background:#fff;border-top:1px solid #e2e9f5;z-index:999;justify-content:space-around}.bottom-nav a{display:flex;align-items:center;justify-content:center;flex:1;font-size:13px}.bottom-nav a.active{color:#315CFF;font-weight:700}body{padding-bottom:60px}.back-top{bottom:74px}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.article-layout{grid-template-columns:minmax(0,1fr)}.side-panel{position:static}.home-intro{gap:22px}}@media(max-width:768px){.shell{width:calc(100% - 32px)}h1{font-size:28px}h2{font-size:21px}.section{margin:30px 0}.category-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.feature-split{gap:20px}.visual-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.home-intro{grid-template-columns:1fr}.two-column{grid-template-columns:1fr}.related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.hero-carousel{height:195px}.page-wrap{padding-top:20px}.article-head h1{font-size:27px}.article-section h2{font-size:21px}}@media(max-width:540px){body{font-size:15px}.hero-carousel{height:170px;margin-top:14px}.feature-split{grid-template-columns:1fr}.feature-split.reverse>div:first-child{order:2}.feature-split.reverse>div:last-child{order:1}.mobile-feature>div:first-child{order:2}.mobile-feature>div:last-child{order:1}.category-item{padding:15px}.category-item strong{font-size:16px}.category-item span{font-size:13px}.visual-grid{gap:10px}.visual-grid.single-visual{grid-template-columns:1fr}.visual-item{padding:6px}.visual-item .media-natural img{max-height:150px}.related-grid{grid-template-columns:1fr}.footer-grid{gap:20px}.footer-bottom{display:block}.news-list a{gap:10px;flex-direction:column}.news-list b{min-width:0}.section-title{align-items:flex-start}.site-footer{margin-top:36px}.plain-panel{padding:20px}.article-section{margin-bottom:24px}.subnav a{padding:0 13px}.lead{font-size:16px}}@media(max-width:360px){.category-grid{grid-template-columns:1fr}.logo-link{font-size:18px}.logo-media{max-width:112px}.main-btn{padding:0 10px;min-width:60px}.hero-carousel{height:145px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}