.corner-ribbons[data-astro-cid-iazsgoch]{--ribbon-blue: 70, 130, 255;--ribbon-violet: 150, 110, 255;--ribbon-cyan: 0, 190, 225;position:fixed;inset:52px 0 0;z-index:0;overflow:clip;pointer-events:none;opacity:.7;mask-image:linear-gradient(to right,#000,#000 5%,transparent 34%,transparent 66%,#000 95%,#000)}.corner-ribbons-diagonal[data-astro-cid-iazsgoch]{position:absolute;inset:0;opacity:1}.corner-ribbons-diagonal[data-astro-cid-iazsgoch][data-diagonal="1"]{opacity:0}.corner-ribbons-diagonal[data-astro-cid-iazsgoch][data-diagonal="0"] .corner-ribbons-corner[data-astro-cid-iazsgoch]{transform:scale(1.16)}.corner-ribbons-diagonal[data-astro-cid-iazsgoch][data-diagonal="1"] .corner-ribbons-corner[data-astro-cid-iazsgoch]{transform:scale(.78)}.corner-ribbons-corner[data-astro-cid-iazsgoch]{position:absolute;width:min(70vw,960px);height:min(62vh,620px);--ribbon-primary: var(--ribbon-blue);--ribbon-secondary: var(--ribbon-violet);--ribbon-angle: -24deg}.corner-ribbons-top-left[data-astro-cid-iazsgoch]{top:-24%;left:-28%}.corner-ribbons-top-left[data-astro-cid-iazsgoch],.corner-ribbons-top-right[data-astro-cid-iazsgoch]{transition:opacity .6s ease}.corner-ribbons[data-astro-cid-iazsgoch][data-footer-visible=true] .corner-ribbons-top-left[data-astro-cid-iazsgoch],.corner-ribbons[data-astro-cid-iazsgoch][data-footer-visible=true] .corner-ribbons-top-right[data-astro-cid-iazsgoch]{opacity:0}.corner-ribbons-top-right[data-astro-cid-iazsgoch]{top:-26%;right:-28%;--ribbon-angle: 28deg;--ribbon-primary: var(--ribbon-violet);--ribbon-secondary: var(--ribbon-blue)}.corner-ribbons-bottom-left[data-astro-cid-iazsgoch]{bottom:-26%;left:-29%;--ribbon-angle: 22deg;--ribbon-primary: var(--ribbon-cyan);--ribbon-secondary: var(--ribbon-blue)}.corner-ribbons-bottom-right[data-astro-cid-iazsgoch]{bottom:-24%;right:-27%;--ribbon-angle: -30deg;--ribbon-primary: var(--ribbon-blue);--ribbon-secondary: var(--ribbon-violet)}.corner-ribbons-glow[data-astro-cid-iazsgoch],.corner-ribbons-band[data-astro-cid-iazsgoch],.corner-ribbons-thread[data-astro-cid-iazsgoch]{position:absolute;border-radius:50%;transform:rotate(var(--ribbon-angle))}.corner-ribbons-glow[data-astro-cid-iazsgoch]{inset:-5% -8%;background:radial-gradient(ellipse closest-side,rgba(var(--ribbon-primary),.14),rgba(var(--ribbon-secondary),.045) 58%,transparent);animation:corner-ribbon-breathe 23s ease-in-out infinite alternate}.corner-ribbons-band[data-astro-cid-iazsgoch]{inset:22% -20%;background:radial-gradient(ellipse closest-side,rgba(var(--ribbon-primary),.29),rgba(var(--ribbon-primary),.09) 55%,transparent);animation:corner-ribbon-flow 16s ease-in-out infinite alternate}.corner-ribbons-thread[data-astro-cid-iazsgoch]{inset:37% -25%;background:radial-gradient(ellipse closest-side,rgba(var(--ribbon-secondary),.3),rgba(var(--ribbon-secondary),.07) 58%,transparent);animation:corner-ribbon-weave 19s ease-in-out infinite alternate}.corner-ribbons-top-left[data-astro-cid-iazsgoch] span[data-astro-cid-iazsgoch]{animation-delay:-5s}.corner-ribbons-top-right[data-astro-cid-iazsgoch] span[data-astro-cid-iazsgoch]{animation-delay:-13s}.corner-ribbons-bottom-left[data-astro-cid-iazsgoch] span[data-astro-cid-iazsgoch]{animation-delay:-9s}.corner-ribbons-bottom-right[data-astro-cid-iazsgoch] span[data-astro-cid-iazsgoch]{animation-delay:-18s}.corner-ribbons--guides[data-astro-cid-iazsgoch] .corner-ribbons-top-left[data-astro-cid-iazsgoch]{--ribbon-primary: var(--ribbon-cyan)}.corner-ribbons--about[data-astro-cid-iazsgoch] .corner-ribbons-top-left[data-astro-cid-iazsgoch]{--ribbon-primary: var(--ribbon-violet)}:root[data-theme=light] .corner-ribbons[data-astro-cid-iazsgoch]{opacity:.52}@keyframes corner-ribbon-flow{0%{transform:translate3d(-10%,-12%,0) rotate(calc(var(--ribbon-angle) - 20deg)) scale(.9,.72)}50%{transform:translate3d(2%,5%,0) rotate(var(--ribbon-angle)) scale(1.16,1.14)}to{transform:translate3d(12%,14%,0) rotate(calc(var(--ribbon-angle) + 24deg)) scale(1.32,.82)}}@keyframes corner-ribbon-weave{0%{transform:translate3d(12%,18%,0) rotate(calc(var(--ribbon-angle) + 30deg)) scale(1.3,1.2)}50%{transform:translate3d(-2%,-4%,0) rotate(calc(var(--ribbon-angle) + 8deg)) scale(.96,1.65)}to{transform:translate3d(-12%,-18%,0) rotate(calc(var(--ribbon-angle) - 22deg)) scale(1.18,.8)}}@keyframes corner-ribbon-breathe{0%{transform:translate3d(-3%,-4%,0) scale(.95);opacity:.6}to{transform:translate3d(6%,8%,0) scale(1.2);opacity:1}}@media(max-width:720px){.corner-ribbons[data-astro-cid-iazsgoch]{opacity:.5;mask-image:linear-gradient(to right,#000,transparent 28%,transparent 72%,#000)}.corner-ribbons-corner[data-astro-cid-iazsgoch]{width:100vw;height:min(48vh,380px)}.corner-ribbons-top-left[data-astro-cid-iazsgoch],.corner-ribbons-bottom-left[data-astro-cid-iazsgoch]{left:-48%}.corner-ribbons-top-right[data-astro-cid-iazsgoch],.corner-ribbons-bottom-right[data-astro-cid-iazsgoch]{right:-48%}.corner-ribbons-top-left[data-astro-cid-iazsgoch],.corner-ribbons-top-right[data-astro-cid-iazsgoch]{top:-16%}.corner-ribbons-bottom-left[data-astro-cid-iazsgoch],.corner-ribbons-bottom-right[data-astro-cid-iazsgoch]{bottom:-16%}:root[data-theme=light] .corner-ribbons[data-astro-cid-iazsgoch]{opacity:.4}}@media(prefers-reduced-motion:reduce){.corner-ribbons[data-astro-cid-iazsgoch] span[data-astro-cid-iazsgoch]{animation:none}}.corner-ribbons[data-astro-cid-iazsgoch][data-paused=true] span[data-astro-cid-iazsgoch]{animation-play-state:paused}@media(prefers-contrast:more),(forced-colors:active){.corner-ribbons[data-astro-cid-iazsgoch]{display:none}}:root{font:100%/1.65 -apple-system,BlinkMacSystemFont,Segoe UI,PingFang HK,PingFang SC,Microsoft YaHei,sans-serif;font-optical-sizing:auto}*,*:before,*:after{box-sizing:border-box}body{margin:0;color:var(--ed-text);background:var(--ed-bg)}button,input,select,textarea{font:inherit}button,summary,a{-webkit-tap-highlight-color:transparent;touch-action:manipulation}button{color:inherit}a{color:inherit;text-decoration:none}p,h1,h2,h3,figure{margin:0}h1,h2,h3{font-weight:650;text-wrap:balance}h1{font-size:clamp(2.25rem,4.8vw,4.5rem);line-height:1.08;letter-spacing:-.042em}h2{font-size:clamp(1.5rem,2.5vw,2rem);line-height:1.23;letter-spacing:-.025em}h3{font-size:1.25rem;line-height:1.35;letter-spacing:-.016em}:lang(zh) h1{line-height:1.22;letter-spacing:-.028em}:lang(zh) h2,:lang(zh) h3{line-height:1.4;letter-spacing:-.018em}svg{display:block;flex-shrink:0}img{max-width:100%}:focus-visible{outline:3px solid var(--ed-accent);outline-offset:5px}#main-content:focus{outline:none}.ed-sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}.ed-shell{width:min(calc(100% - 3rem),74rem);margin-inline:auto}.ed-main{position:relative;z-index:1;padding-top:2rem;padding-bottom:6rem}.editorial-site .site-footer{position:relative;z-index:1}.ed-eyebrow{color:var(--ed-muted);font-size:.75rem;font-weight:650;line-height:1.5;letter-spacing:.09em}:lang(en) .ed-eyebrow{text-transform:uppercase}:lang(zh) .ed-eyebrow{letter-spacing:.08em}.ed-arrow{width:1.125rem;height:1.125rem}.ed-button{display:inline-flex;min-height:2.875rem;justify-content:center;align-items:center;gap:.625rem;padding:.6875rem 1.125rem;border:1px solid transparent;border-radius:999px;background:var(--ed-accent);color:#fff;font-size:.9375rem;font-weight:600;line-height:1.35;text-align:center;transition:background-color .14s ease,transform .1s ease}:root[data-theme=dark] .ed-button{color:#101114}@media(prefers-color-scheme:dark){:root:not([data-theme=light]) .ed-button{color:#101114}}.ed-button:active{transform:scale(.97);transition-duration:65ms}.ed-text-link{display:inline-flex;align-items:center;gap:.5rem;color:var(--ed-accent);font-weight:600;line-height:1.4;text-underline-offset:.2em}.ed-skip{position:fixed;z-index:100;top:.75rem;left:.75rem;padding:.75rem 1rem;border-radius:.75rem;color:var(--ed-text);background:var(--ed-surface);box-shadow:var(--ed-shadow);transform:translateY(-200%)}.ed-skip:focus{transform:none}@media(hover:hover){.ed-text-link:hover{text-decoration:underline}.ed-button:hover{filter:brightness(.94)}}@media(max-width:720px){.ed-shell{width:calc(100% - 2rem)}.ed-main{padding-top:1.5rem;padding-bottom:3.5rem}}@media(prefers-contrast:more){:root{--ed-line: #80858f}.ed-eyebrow{color:var(--ed-text)}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important}.ed-button:active{transform:none}}