:root{--purple:#5F55F5;--yellow:#FFC400;--ink:#222;--deep:#231A68;--muted:#5F6472;--soft:#F7F8FC;--soft2:#F3F5FF}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#fff;color:#222;font:16px/1.75 Arial,"PingFang SC","Microsoft YaHei",sans-serif;overflow-x:hidden}body.drawer-open{overflow:hidden}img,svg,video{max-width:100%}a{color:#5149D8;text-decoration:none;touch-action:manipulation}a:hover{text-decoration:underline}button{font:inherit;cursor:pointer;touch-action:manipulation}a:focus-visible,button:focus-visible{outline:3px solid #FFC400;outline-offset:3px}.container{width:min(100% - 40px,1160px);margin-inline:auto}.skip-link{position:absolute;top:-100px;left:12px;z-index:13000;background:#fff;padding:8px}.skip-link:focus{top:8px}.site-header{background:#fff;position:sticky;top:0;z-index:1000;border-bottom:1px solid #E9E8F5}.header-inner{height:76px;display:flex;align-items:center;justify-content:space-between;gap:22px;white-space:nowrap}.site-logo,.drawer-logo{display:flex;align-items:center;flex:0 0 auto;color:var(--deep)}.site-logo img{height:36px;width:auto;max-width:160px;object-fit:contain}.wordmark{font-size:25px;font-weight:800;white-space:nowrap}.desktop-nav{display:flex;align-items:center;gap:clamp(12px,2vw,27px);min-width:0;margin:auto}.desktop-nav a{color:#222;font-weight:700;font-size:15px;height:76px;display:inline-flex;align-items:center;border-bottom:2px solid transparent;flex:0 0 auto}.desktop-nav a.active{color:#5F55F5;border-bottom-color:#FFC400}.register-btn{display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;min-height:42px;padding:8px 21px;border-radius:999px;color:#FFFFFF;background:linear-gradient(135deg,#5F55F5 0%,#7668FF 48%,#FFC400 100%);font-size:14px;font-weight:800;white-space:nowrap}.register-btn:hover{color:#fff;text-decoration:none;filter:brightness(1.03)}.menu-toggle{display:none}.mobile-drawer,.drawer-mask{display:none}.page-intro{background:linear-gradient(135deg,#F7F8FC,#F3F5FF);padding:55px 0 48px}.eyebrow{font-size:13px;font-weight:800;letter-spacing:.09em;color:#5F55F5}.page-intro h1,.hero h1{color:#231A68;font-size:clamp(30px,3.5vw,38px);line-height:1.28;margin:10px 0 18px}.lead{font-size:17px;line-height:1.85;max-width:850px;color:#444766}.section{padding:55px 0}.section.alt{background:#F7F8FC}.section h2,.content-panel h2{color:#231A68;font-size:25px;line-height:1.35;margin:0 0 18px}.section h3{color:#231A68;margin:0 0 10px;font-size:19px}.section p,.content-panel p{margin:0 0 16px}.prose{max-width:930px}.prose h2{margin-top:29px}.panel-grid,.three-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:19px}.card{border:1px solid #E6E8F5;background:#fff;padding:25px;border-radius:17px;min-width:0}.card p:last-child{margin-bottom:0}.card h2{font-size:21px}.card h3{font-size:19px}.text-link{font-weight:800;display:inline-block;min-height:40px;line-height:40px}.media{position:relative;width:100%;max-width:100%;overflow:hidden;border-radius:14px;background:#F3F5FF;aspect-ratio:16/9}.media > img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;object-position:center center;display:block}.media-placeholder{position:absolute;inset:0;background:linear-gradient(135deg,#F3F5FF,#EDEBFF);display:block}.media-placeholder:after{content:'';position:absolute;inset:28% 42%;border:2px solid #DCD8FD;border-radius:12px;transform:rotate(15deg)}.hero{padding:58px 0 45px;background:#F7F8FC}.hero-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:36px;align-items:center}.hero .media{height:260px;aspect-ratio:auto}.media-strip{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.media-strip .media{height:210px;aspect-ratio:auto}.content-layout{display:grid;grid-template-columns:minmax(0,1fr) 265px;gap:42px;align-items:start}.content-panel{min-width:0}.aside-panel{padding:24px;border-radius:15px;background:#F3F5FF}.aside-panel a{display:block;min-height:40px}.feature-media{max-width:520px;height:240px;aspect-ratio:auto;margin:20px 0 28px}.number-list{counter-reset:item;display:grid;gap:14px}.number-item{counter-increment:item;padding:20px 23px 20px 65px;position:relative;background:#F7F8FC;border-radius:15px}.number-item:before{content:counter(item,decimal-leading-zero);position:absolute;left:18px;top:17px;color:#5F55F5;font-weight:800}.brand-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.brand-card{padding:20px;border:1px solid #E6E8F5;border-radius:16px;background:#fff;min-width:0}.brand-card h2{font-size:21px;margin:0 0 12px;color:#231A68}.brand-card .media{height:205px;aspect-ratio:auto;margin-bottom:14px}.brand-card p{margin:0}.qa-list{display:grid;gap:17px}.qa{background:#F7F8FC;padding:22px;border-radius:14px}.qa h2,.qa h3{font-size:19px;color:#231A68;margin:0 0 9px}.qa p{margin:0}.channel-strip{background:#fff;border-bottom:1px solid #EDEBFF}.channel-strip .container{display:flex;gap:22px;overflow-x:auto;padding-block:12px;scrollbar-width:thin}.channel-strip a{flex-shrink:0;font-size:14px}.related{border-top:1px solid #E8E7F5;padding-top:24px;margin-top:35px}.related a{margin-right:24px;display:inline-block;min-height:40px}.site-footer{background:#120B3D;color:#EDEBFF;padding:50px 0 24px}.footer-grid{display:grid;grid-template-columns:1.7fr repeat(3,1fr);gap:27px}.site-footer a{color:#EDEBFF;display:block;min-height:35px}.site-footer h2{font-size:17px;color:#fff;margin:0 0 16px}.footer-logo img{height:36px;width:auto;object-fit:contain}.footer-logo .wordmark{color:#EDEBFF}.footer-bottom{border-top:1px solid #39315C;padding-top:20px;margin-top:28px;font-size:13px;display:flex;gap:12px;justify-content:space-between;flex-wrap:wrap}.mobile-bottom{display:none}.back-to-top{position:fixed;right:20px;bottom:22px;width:42px;height:42px;border-radius:50%;border:0;color:white;background:#5F55F5;z-index:850;opacity:0;pointer-events:none}.back-to-top.show{opacity:1;pointer-events:auto}
@media(max-width:980px){.desktop-nav{display:none}.header-inner{height:64px;display:grid;grid-template-columns:minmax(45px,1fr) auto minmax(82px,1fr);gap:7px;width:min(100% - 24px,1160px)}.menu-toggle{display:flex;flex-direction:column;justify-content:center;gap:5px;align-items:flex-start;background:none;border:0;padding:8px 4px;min-width:42px;min-height:40px}.menu-toggle span{width:23px;height:2px;background:#231A68;display:block}.site-logo{justify-self:center;max-width:128px;min-width:0}.site-logo img{height:28px;max-width:112px}.wordmark{font-size:20px}.register-btn{min-height:36px;min-width:76px;padding:6px 10px;font-size:12px;justify-self:end}.mobile-drawer{display:block;position:fixed;inset:0 auto 0 0;width:min(84vw,320px);background:#fff;color:#222;z-index:12000;transform:translateX(-105%);transition:transform .2s ease}.mobile-drawer.is-open{transform:translateX(0)}.drawer-mask{display:none;position:fixed;inset:0;background:rgba(18,11,61,.42);z-index:11000;opacity:0;pointer-events:none}.drawer-mask.is-visible{display:block;opacity:1;pointer-events:auto}.drawer-top{display:flex;justify-content:space-between;align-items:center;padding:16px 19px;border-bottom:1px solid #eee}.drawer-logo img{height:28px;width:auto;object-fit:contain}.drawer-close{border:0;background:#F3F5FF;color:#231A68;border-radius:8px;width:42px;height:42px;font-size:28px}.drawer-scroll{height:calc(100% - 75px);overflow-y:auto;padding:12px 22px 25px}.drawer-group{margin:11px 0 24px}.drawer-group strong{display:block;color:#231A68;font-size:14px;margin-bottom:9px}.drawer-group a{display:block;color:#303045;min-height:43px;padding:7px 12px;border-radius:8px}.drawer-group a:hover{background:#F3F5FF}.mobile-bottom{position:fixed;bottom:0;left:0;right:0;z-index:900;display:grid;grid-template-columns:repeat(4,1fr);background:#fff;border-top:1px solid #E4E3F3;padding-bottom:env(safe-area-inset-bottom)}.mobile-bottom a{min-height:55px;display:flex;align-items:center;justify-content:center;color:#393856;font-size:13px;font-weight:700}.mobile-bottom a.active{color:#5F55F5;border-top:2px solid #FFC400}.site-footer{padding-bottom:calc(90px + env(safe-area-inset-bottom))}.back-to-top{bottom:76px}.hero-grid,.content-layout{grid-template-columns:1fr}.hero .media{height:245px}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.panel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:640px){.container{width:calc(100% - 30px)}.section{padding:36px 0}.hero{padding:37px 0}.page-intro{padding:32px 0}.page-intro h1,.hero h1{font-size:29px}.section h2{font-size:22px}.lead{font-size:16px}.hero-grid{gap:24px}.hero .media{height:170px}.media-strip{grid-template-columns:1fr;gap:11px}.media-strip .media{height:165px}.panel-grid,.three-grid,.brand-grid{grid-template-columns:1fr}.feature-media{height:165px}.brand-card .media{height:165px}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.footer-grid>div:first-child{grid-column:1/-1}.footer-bottom{display:block}.card{padding:20px}.related a{margin-right:12px}.content-layout{gap:22px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important}}