*,*::before,*::after{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#080A0D;color:#C7CDD5;font:16px/1.8 Arial,"PingFang SC","Microsoft YaHei",sans-serif}a{color:#8ED8FF;text-decoration:none}a:hover{color:#fff}button{font:inherit;cursor:pointer}a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid #8ED8FF;outline-offset:4px}h1,h2,h3,p,figure{margin-top:0}h1,h2,h3{color:#F5F7FA;line-height:1.4}h1{font-size:clamp(27px,3vw,35px);letter-spacing:-.02em}h2{font-size:clamp(21px,2.2vw,27px)}h3{font-size:19px}p{margin-bottom:16px}small,.eyebrow,.kicker{font-size:13px;color:#9098A3}.wrap{width:min(1200px,calc(100% - 48px));margin-inline:auto}.skip-link{position:absolute;left:12px;top:-80px;z-index:40;background:#5C7CFA;color:white;padding:8px}.skip-link:focus{top:8px}.brandbar{background:rgba(8,10,13,.96);border-bottom:1px solid rgba(255,255,255,.09)}.brandbar-inner{height:76px;display:flex;align-items:center;gap:22px}.brand,.drawer-brand,.footer-brand{display:inline-flex;align-items:center;color:#F5F7FA;gap:10px;min-width:0}.brand{width:225px;flex:none}.brand-word{display:grid;line-height:1.25}.brand-word strong{font-size:20px}.brand-word small{font-size:9px;letter-spacing:.09em;white-space:nowrap}.desktop-nav{display:flex;align-items:center;justify-content:center;gap:clamp(14px,1.6vw,24px);flex:1;white-space:nowrap}.desktop-nav a{position:relative;color:#C7CDD5;font-size:14px;padding-block:27px}.desktop-nav a.active,.desktop-nav a:hover{color:#6EA8FF}.desktop-nav a.active:after{position:absolute;bottom:0;left:0;right:0;height:2px;background:#6EA8FF;content:''}.entry-btn{color:white;background:#5C7CFA;border-radius:999px;padding:0 18px;height:42px;white-space:nowrap;display:inline-flex;align-items:center;justify-content:center;font-size:14px;font-weight:700}.entry-btn:hover{background:#7390FF}.quickbar{background:#10141A;border-bottom:1px solid rgba(255,255,255,.09)}.quick-desktop{height:44px;display:flex;align-items:center;gap:30px}.quick-desktop a,.quick-mobile a{font-size:14px;color:#C7CDD5;white-space:nowrap}.quick-desktop a:hover,.quick-mobile a:hover{color:#6EA8FF}.quick-mobile{display:none}.menu-toggle{display:none;border:1px solid rgba(255,255,255,.16);border-radius:11px;width:40px;height:40px;background:#171C23;padding:10px}.menu-toggle span{display:block;height:2px;background:#F5F7FA;margin:4px 0}.breadcrumbs{display:flex;align-items:center;flex-wrap:wrap;gap:10px;font-size:13px;color:#9098A3;margin:25px 0 20px}.breadcrumbs a{color:#C7CDD5}.main-content{padding-bottom:70px;min-height:62vh}.lead{color:#C7CDD5;font-size:17px;max-width:830px}.intro{margin:0 0 34px}.intro h1{max-width:850px}.intro .kicker{font-size:12px;text-transform:uppercase;letter-spacing:.14em;color:#6EA8FF}.intro .lead{line-height:1.85}.section-rule{padding-top:28px;border-top:1px solid rgba(255,255,255,.12);margin-top:36px}.article-layout{display:grid;grid-template-columns:minmax(0,820px) minmax(200px,1fr);gap:48px;align-items:start}.article{min-width:0}.article-section{margin-bottom:36px}.article-section h2{font-size:25px;padding-left:17px;border-left:3px solid #5C7CFA}.article-section p{max-width:800px}.index-side{position:sticky;top:20px;background:#12161C;border:1px solid rgba(255,255,255,.09);padding:20px;border-radius:13px}.index-side strong{display:block;color:#F5F7FA;margin-bottom:12px}.index-side a{display:block;padding:8px 0;border-bottom:1px solid rgba(255,255,255,.06);font-size:14px;color:#C7CDD5}.index-side a:last-child{border-bottom:0}.related-links{margin-top:46px;border-top:1px solid rgba(255,255,255,.14);padding-top:24px}.related-links h2{font-size:23px}.link-chips{display:flex;flex-wrap:wrap;gap:10px}.link-chips a,.text-link{border:1px solid rgba(255,255,255,.16);border-radius:999px;padding:7px 14px;color:#C7CDD5;font-size:14px}.link-chips a:hover,.text-link:hover{border-color:#6EA8FF;color:#fff}.media-frame{margin:0;background:#0D1015;border:1px solid rgba(255,255,255,.09);border-radius:13px;min-width:0;max-width:100%;padding:12px;text-align:center;overflow:hidden}.media-frame img{display:block;width:100%;height:auto;max-width:100%;max-height:inherit;object-fit:contain;object-position:center center;margin:auto}.media-frame figcaption{color:#9098A3;text-align:left;font-size:13px;padding-top:10px;line-height:1.65}.media-hero img{max-height:310px}.media-regular img{max-height:180px}.media-feature img{max-height:245px}.media-device{max-width:270px;margin-inline:auto}.media-device img{max-height:340px}.media-gif img{max-height:175px}.media-gallery img{max-height:280px}.media-logo{border:0;padding:0;background:transparent;border-radius:0;overflow:visible;width:auto;flex:none}.media-logo img{width:auto;height:auto;max-height:36px;max-width:90px}.media-placeholder{height:150px;background:linear-gradient(130deg,#10141a,#171c23);border-radius:8px}.media-hero .media-placeholder{height:270px}.media-device .media-placeholder{height:320px}.media-gif .media-placeholder{height:145px}.media-logo .media-placeholder{height:32px;width:64px}.media-gallery .media-placeholder{height:230px}.home-hero{display:grid;grid-template-columns:minmax(0,1.07fr) minmax(0,.93fr);align-items:center;gap:38px;margin:34px 0 62px}.home-hero h1{font-size:clamp(28px,3.6vw,42px)}.home-hero .lead{font-size:17px}.hero-links{display:flex;gap:18px;flex-wrap:wrap;margin-top:24px}.hero-links a{font-weight:700;border-bottom:1px solid #5C7CFA;padding-bottom:4px}.home-section{margin-top:55px}.home-section>h2{margin-bottom:20px}.feature-intro{max-width:790px}.interest-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.interest-grid>a{padding:24px;border:1px solid rgba(255,255,255,.09);background:#12161C;border-radius:13px;color:#C7CDD5}.interest-grid strong{display:block;color:#F5F7FA;font-size:20px;margin-bottom:5px}.interest-grid p{margin:0}.split{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr);gap:38px;align-items:start}.split.equal{grid-template-columns:repeat(2,minmax(0,1fr))}.split.visual{grid-template-columns:minmax(0,.87fr) minmax(0,1.13fr);align-items:center}.note-stack{border-left:1px solid rgba(255,255,255,.16);padding-left:22px}.note-stack p{padding-bottom:15px;border-bottom:1px solid rgba(255,255,255,.09)}.note-stack b{color:#8ED8FF}.editorial{max-width:820px}.editorial p,.article p{line-height:1.84}.image-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.image-grid.quad{grid-template-columns:repeat(4,minmax(0,1fr))}.image-grid .media-frame{height:100%}.image-grid .media-frame img{max-height:175px}.number-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 26px}.number-links a{padding:19px 0;border-bottom:1px solid rgba(255,255,255,.09);color:#C7CDD5}.number-links strong{color:#8ED8FF;padding-right:12px}.info-strip{background:#12161C;border:1px solid rgba(255,255,255,.09);border-radius:13px;padding:24px;margin-top:50px}.topic-table{width:100%;border-collapse:collapse;margin:28px 0}.topic-table th,.topic-table td{border-bottom:1px solid rgba(255,255,255,.13);text-align:left;padding:14px;vertical-align:top}.topic-table th{color:#F5F7FA;background:#171C23}.topic-table td{font-size:14px}.topic-table-wrap{overflow-x:auto}.reading-items{display:grid;gap:0}.reading-item{padding:24px 0;border-bottom:1px solid rgba(255,255,255,.12);max-width:920px}.reading-item h2{margin-bottom:8px}.reading-item p{margin-bottom:8px}.reading-item a{font-size:14px}.gallery-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.gallery-grid>*:first-child{grid-column:span 2}.gallery-grid .media-frame img{max-height:350px}.faq-list details{border-bottom:1px solid rgba(255,255,255,.15);padding:16px 0}.faq-list summary{font-weight:700;color:#F5F7FA;cursor:pointer}.faq-list details p{margin:12px 0 0;max-width:790px}.site-footer{background:#050608;border-top:1px solid rgba(255,255,255,.12);padding:43px 0 18px}.footer-grid{display:grid;grid-template-columns:1.1fr 1fr 1fr;gap:55px}.footer-grid h2{font-size:16px}.footer-grid p{font-size:14px;color:#9098A3}.footer-brand{margin-bottom:14px}.footer-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:5px 15px}.footer-links a{font-size:13px;color:#C7CDD5}.footer-bottom{margin-top:35px;border-top:1px solid rgba(255,255,255,.09);padding-top:15px;display:flex;justify-content:space-between;gap:20px;font-size:12px;color:#9098A3}.footer-bottom p{margin:0}.drawer-backdrop,.site-drawer{position:fixed;z-index:30;visibility:hidden;pointer-events:none;transition:visibility .23s,transform .23s,opacity .23s}.drawer-backdrop{inset:0;background:rgba(0,0,0,.68);opacity:0}.drawer-backdrop.is-open{visibility:visible;pointer-events:auto;opacity:1}.site-drawer{left:0;top:0;bottom:0;width:min(390px,86vw);background:#0D1015;overflow-y:auto;transform:translateX(-105%);padding:20px 22px 38px;box-shadow:15px 0 40px #0006}.site-drawer.is-open{visibility:visible;pointer-events:auto;transform:translateX(0)}.drawer-open{overflow:hidden}.drawer-top{display:flex;justify-content:space-between;align-items:center;padding-bottom:13px;border-bottom:1px solid rgba(255,255,255,.12)}.drawer-brand strong{font-size:17px}.drawer-close{border:1px solid rgba(255,255,255,.16);background:#171C23;border-radius:10px;color:#fff;width:40px;height:40px;font-size:24px}.drawer-group{margin-top:24px}.drawer-group h2{font-size:13px;color:#9098A3;letter-spacing:.06em}.drawer-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.drawer-links a{color:#C7CDD5;font-size:14px;padding:3px 0}.back-top{position:fixed;right:22px;bottom:22px;visibility:hidden;opacity:0;pointer-events:none;border:1px solid rgba(255,255,255,.14);background:#171C23;color:white;border-radius:50%;width:44px;height:44px;z-index:5;transition:opacity .2s}.back-top.show{visibility:visible;opacity:1;pointer-events:auto}@media(max-width:1100px){.brand{width:185px}.brand-word small{font-size:8px}.desktop-nav{gap:12px}.desktop-nav a{font-size:13px}}@media(max-width:979px){.wrap{width:calc(100% - 40px)}.brandbar-inner{height:64px;justify-content:space-between;position:relative}.menu-toggle{display:block;flex:none}.brand{width:auto;position:absolute;left:50%;transform:translateX(-50%);justify-content:center}.brand-word{display:none}.brand .media-logo img{max-height:28px;max-width:100px}.desktop-nav,.quick-desktop{display:none}.quick-mobile{display:flex;gap:26px;overflow-x:auto;overscroll-behavior-inline:contain;scrollbar-width:none;padding:10px 20px;height:43px}.quick-mobile::-webkit-scrollbar{display:none}.entry-btn{height:39px;padding-inline:13px;font-size:12px;margin-left:auto}.article-layout{grid-template-columns:minmax(0,1fr)}.index-side{position:static;order:-1}.index-side a{display:inline-block;margin-right:12px;border:0}.split{gap:24px}.footer-grid{gap:24px}}@media(max-width:767px){.home-hero,.split,.split.equal,.split.visual{grid-template-columns:minmax(0,1fr)}.home-hero .media-frame{order:-1}.home-hero{gap:22px;margin:22px 0 36px}.home-hero .media-hero img{max-height:205px}.media-hero .media-placeholder{height:190px}.home-section{margin-top:36px}.interest-grid{grid-template-columns:1fr}.image-grid,.image-grid.quad{grid-template-columns:repeat(2,minmax(0,1fr))}.gallery-grid{grid-template-columns:1fr}.gallery-grid>*:first-child{grid-column:auto}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-about{grid-column:span 2}.footer-bottom{display:block}.note-stack{padding-left:16px}.media-feature img{max-height:185px}.media-gif img{max-height:145px}.media-device{max-width:220px}.intro h1{font-size:26px}.article-section h2{font-size:21px}.lead{font-size:15px}.number-links{grid-template-columns:1fr}}@media(max-width:480px){.wrap{width:calc(100% - 32px)}body{font-size:15px}.brandbar-inner{height:62px}.brand .media-logo img{max-width:75px}.entry-btn{padding-inline:11px;font-size:12px}.interest-grid>a{padding:18px}.image-grid{gap:9px}.image-grid .media-frame{padding:7px}.media-regular img{max-height:155px}.media-gallery img{max-height:190px}.media-hero img{max-height:145px}.media-hero .media-placeholder{height:145px}.media-gif img{max-height:120px}.footer-grid{grid-template-columns:1fr}.footer-about{grid-column:auto}.footer-links{grid-template-columns:repeat(2,minmax(0,1fr))}.topic-table{font-size:13px}.topic-table th,.topic-table td{padding:9px}.home-hero h1{font-size:28px}}@media(max-width:350px){.brand .media-logo img{max-width:66px}.entry-btn{padding-inline:9px}.menu-toggle{width:40px}.image-grid,.image-grid.quad{grid-template-columns:1fr}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition-duration:0s!important;animation-duration:0s!important}}
