*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#fff;color:#252B3A;font:16px/1.8 Arial,"PingFang SC","Microsoft YaHei",sans-serif}button,a{touch-action:manipulation}a{color:#315CFF;text-decoration:none}a:hover{text-decoration:underline}a:focus-visible,button:focus-visible{outline:3px solid #315CFF;outline-offset:3px}h1,h2,h3{color:#17213A;line-height:1.4}h1{font-size:34px;margin:0 0 16px}h2{font-size:24px;margin:0 0 18px}h3{font-size:19px}p{margin:0 0 17px}.container{max-width:1160px;padding:0 24px;margin:0 auto;min-width:0}.site-header{position:sticky;top:0;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);z-index:1000;border-bottom:1px solid #e8eefa}.header-inner{height:70px;display:flex;align-items:center;gap:24px}.brand{display:inline-flex;align-items:center;flex:0 0 auto;min-width:106px;font-weight:800;color:#315CFF;font-size:20px;white-space:nowrap}.brand img{height:36px;width:auto;max-width:155px;object-fit:contain}.brand:has(img) .brand-fallback{display:none}.main-nav{display:flex;gap:24px;align-items:center;justify-content:center;flex:1;min-width:0;white-space:nowrap}.main-nav a{color:#252B3A;font-size:14px;border-bottom:2px solid transparent;padding:22px 0 18px}.main-nav a.active,.main-nav a:hover{border-color:#315CFF;color:#315CFF;text-decoration:none}.main-btn{display:inline-flex;align-items:center;justify-content:center;min-width:80px;height:40px;padding:0 18px;border-radius:50px;background:#315CFF;color:#fff;font-weight:700;white-space:nowrap;flex:0 0 auto}.main-btn:hover{background:#2446d8;color:#fff;text-decoration:none}.channel-bar{background:#F5F7FB}.channel-scroll{min-height:44px;display:flex;align-items:center;gap:0;overflow-x:auto;white-space:nowrap;scrollbar-width:thin}.channel-scroll a{font-size:13px;color:#5F6B82;display:inline-block;padding:0 15px;border-right:1px solid #d9dfec}.channel-scroll a:first-child{padding-left:0}.channel-scroll a.active{color:#315CFF;font-weight:700}.main-content{padding-top:28px;padding-bottom:65px}.section{margin:38px 0}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:12px;margin-bottom:16px;border-bottom:1px solid #e6ebf6;padding-bottom:12px}.section-heading h2{margin:0}.section-heading a{font-size:14px}.lead{font-size:17px;line-height:1.85;color:#41506b}.eyebrow{color:#315CFF;font-size:13px;letter-spacing:1px;font-weight:700;margin-bottom:10px}.article-shell{max-width:840px;margin:0 auto}.article-shell h1{font-size:32px}.article-section{padding:12px 0 16px;border-bottom:1px solid #e8eefa}.article-section p{font-size:16px}.article-section h2{font-size:23px;margin-top:14px}.related-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.related-links a,.topic-card{display:block;border:1px solid rgba(49,92,255,.14);border-radius:13px;background:#fff;padding:17px;color:#17213A}.related-links a:hover,.topic-card:hover{border-color:#315CFF;text-decoration:none;background:#f9fbff}.topic-card h3{margin:0 0 8px}.topic-card p{font-size:14px;color:#5F6B82;margin:0}.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.feature-split{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(0,1fr);gap:30px;align-items:start}.feature-split.equal{grid-template-columns:repeat(2,minmax(0,1fr))}.panel{padding:20px;border:1px solid #e5ebfc;border-radius:14px;background:#f8faff}.panel h3{margin:0 0 10px}.text-list{margin:0;padding-left:22px}.text-list li{padding:7px 0}.media{display:flex;align-items:center;justify-content:center;max-width:100%;width:100%;min-width:0;overflow:hidden;border-radius:12px;background:#EEF4FF;min-height:108px}.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:235px;object-fit:contain;margin:0 auto}.media-device img{max-height:330px}.media-device{aspect-ratio:9/11}.media-banner{aspect-ratio:16/6;max-height:320px}.media-square{aspect-ratio:1/1}.media-placeholder{width:100%;height:100%;min-height:120px;background:linear-gradient(135deg,#eef4ff,#e4edff);border-radius:10px}.visual{margin:0 0 18px;min-width:0}.visual figcaption{font-size:13px;color:#5F6B82;text-align:center;margin-top:8px}.visual-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.visual-grid .media img{max-height:165px}.visual-grid .media{min-height:135px}.news-list{counter-reset:news;list-style:none;padding:0;margin:0}.news-list li{counter-increment:news;border-bottom:1px solid #e8eefa;padding:14px 0;display:flex;align-items:baseline;gap:15px}.news-list li:before{content:counter(news,decimal-leading-zero);color:#315CFF;font-weight:800;font-size:20px}.news-list a{color:#17213A;font-weight:700}.news-list p{color:#5F6B82;font-size:14px;margin:0}.hero-intro{margin:24px 0 34px}.notice{background:#f5f7fb;border-left:3px solid #315CFF;padding:17px 20px;border-radius:0 9px 9px 0}.site-footer{background:#101828;color:#D8E0F2;padding-top:46px;font-size:14px}.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:32px}.site-footer h2{font-size:16px;color:#fff;margin:0 0 13px}.site-footer a{display:block;color:#D8E0F2;margin:7px 0}.site-footer a:hover{color:#fff}.footer-brand{display:flex;align-items:center;gap:10px;color:#fff}.footer-brand img{max-height:34px;max-width:110px;object-fit:contain}.footer-bottom{border-top:1px solid #344056;margin-top:30px;padding-top:18px;padding-bottom:22px;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}.menu-toggle,.bottom-nav,.mobile-drawer,.drawer-mask{display:none}#back-top{position:fixed;right:20px;bottom:20px;background:#315CFF;border:0;border-radius:100%;color:#fff;width:40px;height:40px;cursor:pointer;opacity:0;pointer-events:none;transition:opacity .2s}#back-top.visible{opacity:1;pointer-events:auto}.slider{position:relative;background:#EEF4FF;border-radius:14px;overflow:hidden}.slides{position:relative;min-height:220px;max-height:320px}.slide{display:none;align-items:center;justify-content:center;width:100%;height:100%;min-height:220px;max-height:320px;text-align:center}.slide.is-active{display:flex}.slide img{max-width:100%;max-height:320px;width:auto;height:auto;object-fit:contain}.slide .media-placeholder{min-height:220px}.slider-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:5;border:0;background:rgba(23,33,58,.65);color:white;font-size:22px;width:38px;height:38px;border-radius:50%;cursor:pointer}.slider-prev{left:12px}.slider-next{right:12px}.slider-dots{position:absolute;bottom:8px;left:0;right:0;z-index:5;display:flex;justify-content:center;gap:7px}.slider-dots button{width:9px;height:9px;padding:0;border:0;border-radius:50%;background:#b9c5db;cursor:pointer}.slider-dots button.active{background:#315CFF}.faq-item{border-bottom:1px solid #e8eefa;padding:12px 0}.faq-item h2{font-size:19px;margin:0 0 5px}.faq-item p{margin:0 0 6px} @media(max-width:1100px){.main-nav{gap:15px}.header-inner{gap:15px}.main-nav a{font-size:13px}} @media(max-width:980px){.container{padding-left:20px;padding-right:20px}.site-header .header-inner{height:58px;justify-content:space-between}.main-nav{display:none}.menu-toggle{display:inline-flex;align-items:center;justify-content:center;background:transparent;border:0;color:#17213A;font-size:24px;padding:6px;cursor:pointer}.brand{min-width:0;font-size:19px}.brand img{height:29px}.main-btn{height:36px;padding:0 13px;min-width:65px}.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}.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;justify-content:space-between;align-items:center;padding:14px 18px;border-bottom:1px solid #e8eefa}.drawer-close{background:none;border:0;font-size:22px;padding:6px;cursor:pointer}.drawer-group{padding:10px 18px;border-bottom:1px solid #eef1f8}.drawer-group h2{font-size:13px;color:#5F6B82;margin:7px 0}.drawer-group a{display:block;padding:7px 6px;min-height:40px;color:#252B3A;font-size:15px}.drawer-group a.active{color:#315CFF;font-weight:700}.bottom-nav{display:flex;position:fixed;bottom:0;left:0;right:0;height:60px;background:#fff;z-index:990;border-top:1px solid #e0e7f4;justify-content:space-around;align-items:center}.bottom-nav a{font-size:14px;color:#5F6B82;flex:1;text-align:center}.bottom-nav a.active{color:#315CFF;font-weight:700}.site-footer{padding-bottom:60px}#back-top{bottom:75px}.main-content{padding-bottom:70px}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:700px){.container{padding-left:16px;padding-right:16px}.main-content{padding-top:18px}.feature-split,.feature-split.equal{grid-template-columns:minmax(0,1fr)}.grid-3,.visual-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-2{grid-template-columns:minmax(0,1fr)}h1,.article-shell h1{font-size:27px}h2{font-size:21px}.lead{font-size:16px}.section{margin:27px 0}.visual-grid .media img{max-height:150px}.slide,.slides,.slide .media-placeholder{min-height:145px;max-height:200px}.slide img{max-height:200px}.media-device img{max-height:260px}.footer-grid{gap:25px}.related-links{grid-template-columns:1fr}}@media(max-width:380px){.grid-3,.visual-grid{grid-template-columns:1fr}.site-header .header-inner{gap:8px}.brand{font-size:17px}.brand img{max-width:115px}.main-btn{min-width:60px}.footer-grid{grid-template-columns:1fr}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}