*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#111318;color:#D5D8DF;font:16px/1.75 system-ui,"PingFang SC","Microsoft YaHei",sans-serif;overflow-x:hidden}img{max-width:100%}a{color:#f0c27c;text-underline-offset:4px;touch-action:manipulation}a:hover{color:#FF684E}button{font:inherit;cursor:pointer;touch-action:manipulation}button:focus-visible,a:focus-visible{outline:2px solid #FF684E;outline-offset:3px}h1,h2,h3,p,ul,ol{overflow-wrap:anywhere}h1,h2,h3{color:#F7F8FA;line-height:1.3}h1{font-size:clamp(28px,3.2vw,42px);margin:0 0 18px}h2{font-size:clamp(22px,2.1vw,28px);margin:0 0 18px}h3{font-size:19px;margin:0 0 10px}p{margin:0 0 15px}.shell{width:min(1200px,calc(100% - 40px));margin-inline:auto;min-width:0}.skip-link{position:absolute;top:-100px;left:8px;background:#F45132;color:white;z-index:30000;padding:8px}.skip-link:focus{top:8px}.site-header{background:#151820;border-bottom:1px solid rgba(255,255,255,.09);position:relative;z-index:50}.header-primary{min-height:76px;display:flex;align-items:center;gap:28px}.brand{display:flex;align-items:center;gap:9px;white-space:nowrap;text-decoration:none;color:#F7F8FA;flex-shrink:0}.brand:hover{color:#F7F8FA}.brand-logo{width:49px;height:45px;display:flex;align-items:center;justify-content:center}.brand-logo img{width:100%;height:100%;object-fit:contain;object-position:center}.logo-fallback{color:#F45132;border:1px solid #F45132;border-radius:8px;display:grid;place-items:center;width:42px;height:42px;font-size:26px;font-weight:850}.brand-type{display:flex;flex-direction:column;line-height:1.2}.brand-type strong{font-size:21px;letter-spacing:.5px}.brand-type small{font-size:10px;color:#D7A84B;letter-spacing:2px}.desktop-main{display:flex;align-items:center;gap:clamp(12px,1.45vw,26px);margin-left:auto;min-width:0}.desktop-main a,.header-secondary a{white-space:nowrap;text-decoration:none;color:#D5D8DF;font-weight:600;min-height:42px;display:inline-flex;align-items:center;position:relative}.desktop-main a.active,.header-secondary a.active,.desktop-main a:hover,.header-secondary a:hover{color:#fff}.desktop-main a.active:after,.header-secondary a.active:after{content:"";height:2px;position:absolute;bottom:0;left:0;right:0;background:#F45132}.register-button{display:grid;place-items:center;min-width:74px;min-height:42px;border-radius:9px;background:#F45132;color:#fff;text-decoration:none;font-weight:750;white-space:nowrap}.register-button:hover{background:#FF684E;color:white}.header-secondary{border-top:1px solid rgba(255,255,255,.07)}.header-secondary nav{display:flex;gap:34px;min-height:43px;align-items:center}.header-secondary a{font-size:13px;min-height:43px;color:#AEB4C0}.menu-toggle{display:none;background:none;border:0;color:white;padding:10px;width:44px;min-height:44px;flex-shrink:0}.menu-toggle span{display:block;width:23px;height:2px;background:#fff;margin:5px auto}.mobile-drawer,.drawer-mask{display:none}.site-main{padding-top:32px;padding-bottom:84px;min-height:55vh}.eyebrow{color:#D7A84B;letter-spacing:2px;text-transform:uppercase;font-weight:750;font-size:12px;margin-bottom:12px}.lead{font-size:17px;color:#c7ccd7;max-width:850px}.page-head{padding:28px 0 30px;border-bottom:1px solid rgba(255,255,255,.09);margin-bottom:30px}.page-head .lead{max-width:850px}.media{position:relative;width:100%;max-width:100%;overflow:hidden;border-radius:12px;background:#12151c;aspect-ratio:16/9;border:1px solid rgba(255,255,255,.07)}.media>img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;object-position:center center;display:block}.media--portrait{aspect-ratio:4/5}.media--square{aspect-ratio:1/1}.media--app{aspect-ratio:3/4;max-width:360px;margin-inline:auto}.media-placeholder{display:block;width:100%;height:100%;background:radial-gradient(circle at 30% 25%,#252a34,#12151c 70%)}.hero-slider{position:relative;border:1px solid rgba(255,255,255,.09);background:#12151c;border-radius:16px;overflow:hidden}.hero-slider .media{height:clamp(220px,24vw,300px);aspect-ratio:auto;border:0;border-radius:0}.slide[hidden]{display:none}.slider-controls{display:flex;align-items:center;justify-content:center;gap:16px;padding:12px}.slider-controls button{min-width:42px;min-height:42px;background:#222733;color:#fff;border:1px solid rgba(255,255,255,.12);border-radius:8px}.slider-controls button:hover{background:#F45132}.slider-dots{display:flex;gap:8px}.slider-dots button{min-width:14px;width:14px;height:14px;min-height:14px;padding:0;border-radius:50%;background:#737984}.slider-dots button[aria-current="true"]{background:#F45132}.home-intro{padding:34px 0 18px}.content-section{margin:40px 0}.section-bar{display:flex;justify-content:space-between;align-items:baseline;gap:18px;margin-bottom:18px}.section-bar a{white-space:nowrap}.channel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px}.channel-tile{padding:24px;background:#1A1E27;border:1px solid rgba(255,255,255,.09);border-top:3px solid #F45132;border-radius:12px;min-width:0}.channel-tile:nth-child(2){border-top-color:#D7A84B}.channel-tile:nth-child(3){border-top-color:#8c939f}.channel-tile p{font-size:15px}.channel-tile a{display:inline-flex;min-height:40px;align-items:center}.feature-split,.twocol{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:32px;align-items:center}.feature-split.flip{grid-template-columns:minmax(0,1fr) minmax(0,1.1fr)}.feature-split>* ,.twocol>*{min-width:0}.feature-text h2{margin-bottom:15px}.text-link-row{display:flex;flex-wrap:wrap;gap:10px 24px;margin-top:16px}.text-link-row a{min-height:40px;display:inline-flex;align-items:center}.gallery-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.gallery-item{min-width:0;background:#1A1E27;border:1px solid rgba(255,255,255,.08);border-radius:12px;overflow:hidden}.gallery-item .media{border-radius:0;border:0}.gallery-caption{padding:16px}.gallery-caption h3{font-size:17px}.gallery-caption p{font-size:14px;color:#Bfc4ce}.editorial-panels{display:grid;grid-template-columns:1fr 1fr;gap:18px}.editorial-panel{background:#1A1E27;border:1px solid rgba(255,255,255,.09);padding:24px;border-radius:12px;min-width:0}.editorial-panel ul,.reading-list{padding-left:20px}.editorial-panel li,.reading-list li{margin-bottom:10px}.index-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.index-row article{padding:19px 0;border-top:2px solid rgba(244,81,50,.65)}.index-row p{font-size:15px}.qa-list{max-width:930px}.qa-list details{border-bottom:1px solid rgba(255,255,255,.12);padding:13px 0}.qa-list summary{font-weight:700;color:#F7F8FA;cursor:pointer;min-height:42px}.qa-list details p{padding:9px 4px;color:#cbd0d8}.closing-note{padding:25px;background:linear-gradient(135deg,#25252a,#1a1e27);border-left:3px solid #D7A84B;border-radius:8px}.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 255px;gap:42px;align-items:start}.article-body{min-width:0}.article-aside{min-width:0;position:sticky;top:20px;padding:22px;border-radius:12px;background:#1A1E27;border:1px solid rgba(255,255,255,.09)}.article-aside h2{font-size:19px}.article-aside a{display:block;min-height:40px;padding:5px 0}.prose-section{margin:0 0 38px;scroll-margin-top:18px}.prose-section h2{padding-bottom:10px;border-bottom:1px solid rgba(255,255,255,.09)}.prose-section p{margin-bottom:17px}.article-media{margin:10px 0 30px}.article-media .media{max-height:470px}.feature-media{max-width:650px}.intro-highlight{font-size:17px;color:#dce1e9;padding-left:16px;border-left:3px solid #F45132}.related{margin-top:38px;padding:22px 0;border-top:1px solid rgba(255,255,255,.12)}.related h2{font-size:21px}.related-links{display:flex;gap:12px 25px;flex-wrap:wrap}.related-links a{min-height:40px;display:inline-flex;align-items:center}.reading-layout{max-width:870px;margin:auto}.reading-layout .page-head{padding-top:6px}.reading-layout .prose-section{margin-top:32px}.local-toc{display:flex;gap:10px;flex-wrap:wrap;margin:18px 0 32px}.local-toc a,.filter-nav a{padding:7px 13px;background:#222733;border-radius:7px;color:#e2e4e9;text-decoration:none;min-height:40px;display:inline-flex;align-items:center}.guide-step{counter-increment:steps;padding-left:58px;position:relative;margin-bottom:26px}.guide-step:before{content:counter(steps,decimal-leading-zero);position:absolute;left:0;top:0;color:#D7A84B;font-size:25px;font-weight:800}.guide-steps{counter-reset:steps}.guide-step h2{font-size:23px}.topic-list article{padding:19px 0;border-bottom:1px solid rgba(255,255,255,.1)}.topic-list h2{font-size:23px}.table-wrap{overflow-x:auto}.info-table{width:100%;border-collapse:collapse;min-width:560px}.info-table th,.info-table td{text-align:left;border-bottom:1px solid rgba(255,255,255,.12);padding:15px;vertical-align:top}.info-table th{color:#F7F8FA;background:#222733}.gallery-group{margin:40px 0;scroll-margin-top:20px}.gallery-group>p{max-width:880px}.gallery-wide{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.gallery-wide .gallery-item .media{aspect-ratio:4/5}.gallery-wide .gallery-item.landscape .media{aspect-ratio:16/9}.filter-nav{display:flex;flex-wrap:wrap;gap:10px;margin:10px 0 35px}.note{padding:18px 20px;border-left:3px solid #D7A84B;background:#222733;color:#D5D8DF;border-radius:5px}.app-showcase{display:grid;grid-template-columns:minmax(0,380px) minmax(0,1fr);align-items:center;gap:34px}.site-footer{background:#151820;border-top:1px solid rgba(255,255,255,.09);padding:44px 0 25px}.footer-grid{display:grid;grid-template-columns:1.3fr repeat(3,1fr);gap:30px}.footer-intro p{margin-top:20px;color:#AEB4C0;font-size:14px}.footer-grid nav h2{font-size:16px;margin:0 0 14px}.footer-grid nav a{display:block;color:#AEB4C0;text-decoration:none;font-size:14px;min-height:34px}.footer-grid nav a:hover{color:#FF684E}.footer-bottom{margin-top:30px;border-top:1px solid rgba(255,255,255,.09);padding-top:19px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;color:#AEB4C0;font-size:13px}.mobile-bottom{display:none}body.drawer-open{overflow:hidden}@media(max-width:1024px){.desktop-main,.header-secondary{display:none}.site-header .header-primary{min-height:66px;justify-content:space-between;gap:8px}.menu-toggle{display:block}.header-primary>.brand{position:absolute;left:50%;transform:translateX(-50%)}.header-primary .brand-logo{width:40px;height:40px}.header-primary .brand-type strong{font-size:17px}.header-primary .brand-type small{font-size:8px}.header-primary .register-button{margin-left:auto;min-width:60px;min-height:40px;font-size:14px}.mobile-drawer{display:block;position:fixed;inset:0 auto 0 0;width:min(84vw,320px);max-width:100%;height:100dvh;overflow-y:auto;background:#151820;color:#F7F8FA;z-index:12000;transform:translateX(-105%);transition:transform .2s ease;visibility:hidden}.mobile-drawer.is-open{transform:translateX(0);visibility:visible}.drawer-mask{display:none;position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:11000;opacity:0;pointer-events:none}.drawer-mask.is-visible{display:block;opacity:1;pointer-events:auto}.drawer-top{padding:16px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid rgba(255,255,255,.09)}.drawer-close{color:#fff;border:0;background:#222733;border-radius:8px;width:44px;height:44px;font-size:28px}.drawer-group{padding:15px 20px;border-bottom:1px solid rgba(255,255,255,.07)}.drawer-group h2{font-size:13px;color:#D7A84B;margin:0 0 6px}.drawer-group a{min-height:44px;display:flex;align-items:center;padding:7px 8px;color:#D5D8DF;text-decoration:none;border-radius:6px}.drawer-group a.active{color:#fff;background:#353039;border-left:3px solid #F45132}.mobile-bottom{position:fixed;bottom:0;left:0;right:0;z-index:1000;display:grid;grid-template-columns:repeat(4,1fr);background:#151820;border-top:1px solid rgba(255,255,255,.14);padding-bottom:env(safe-area-inset-bottom)}.mobile-bottom a{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:58px;gap:0;text-decoration:none;color:#D5D8DF;font-size:12px}.mobile-bottom a span{font-size:19px;line-height:1.2}.mobile-bottom a[aria-current="page"]{color:#FF684E}.site-footer{padding-bottom:90px}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.article-grid{grid-template-columns:minmax(0,1fr) 205px;gap:24px}}@media(max-width:740px){.shell{width:calc(100% - 32px)}.site-main{padding-top:18px;padding-bottom:65px}.hero-slider .media{height:clamp(140px,40vw,180px)}.home-intro{padding-top:26px}.channel-grid,.editorial-panels,.index-row,.feature-split,.feature-split.flip,.twocol,.article-grid,.app-showcase{grid-template-columns:1fr}.gallery-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.gallery-wide{grid-template-columns:repeat(2,minmax(0,1fr))}.article-aside{position:static}.feature-split.flip .feature-text{order:1}.feature-split.flip .media{order:2}.content-section{margin:32px 0}.channel-tile{padding:18px}.page-head{padding:18px 0 24px}.lead{font-size:16px}.gallery-group .media{max-height:260px}.app-showcase .media--app{max-width:260px}.footer-grid{gap:22px}.footer-intro{grid-column:1/-1}.footer-bottom{display:block}.footer-bottom span{display:block;margin-bottom:8px}}@media(max-width:380px){.header-primary .brand-logo{width:33px;height:36px}.header-primary .brand-type strong{font-size:15px}.header-primary .brand-type small{font-size:7px}.header-primary .register-button{min-width:54px}.gallery-grid,.gallery-wide{grid-template-columns:1fr}.gallery-item .media{max-height:235px}.section-bar{align-items:flex-start;flex-direction:column;gap:0}body{font-size:15px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}}