:root{--page-surface: var(--white);--selection-bg: rgba(20, 125, 142, .3)}@layer tokens,base,components;@layer base{html{overflow-x:hidden;width:100%;max-width:100%;overscroll-behavior-x:none}body{overflow-x:hidden;width:100%;max-width:100%;position:relative;touch-action:pan-y;overscroll-behavior-x:none}button{border:none;background:none}ul{list-style:none}}.bg-hero-section{background:var(--white);padding:6rem clamp(1rem,3vw,1.75rem) 1.5rem}.bg-hero-container{max-width:1400px;margin:0 auto}.bg-hero{position:relative;border-radius:1.5rem;overflow:hidden;min-height:clamp(16rem,40vh,24rem);display:flex;align-items:center;justify-content:center;padding:clamp(2.5rem,6vh,4.5rem) clamp(1.5rem,5vw,4rem);text-align:center;background:radial-gradient(ellipse 55% 65% at 22% 32%,rgba(88,181,197,.42),transparent 62%),radial-gradient(ellipse 50% 55% at 78% 68%,rgba(48,160,179,.3),transparent 65%),radial-gradient(ellipse 80% 70% at 50% 100%,rgba(20,125,142,.32),transparent 70%),radial-gradient(ellipse 40% 35% at 65% 18%,rgba(135,210,220,.18),transparent 60%),linear-gradient(135deg,#0a1322,#122236 55%,#0b1525)}.bg-hero:before{content:"";position:absolute;inset:0;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.5 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)' opacity='0.55'/></svg>");opacity:.25;mix-blend-mode:overlay;pointer-events:none}.bg-hero-inner{position:relative;z-index:2;max-width:52rem;display:flex;flex-direction:column;align-items:center;gap:1.25rem}.bg-hero h1{font-family:var(--font-display);font-size:clamp(2.5rem,5vw,4rem);font-weight:500;line-height:1.05;letter-spacing:-.025em;color:#fff}.bg-hero p{font-family:var(--font-body);font-size:clamp(.9375rem,1.1vw,1.0625rem);line-height:1.5;color:#ffffffd9;max-width:36rem}.bg-fineprint{max-width:1400px;margin:1.75rem auto 0;padding:0 clamp(1rem,3vw,1.75rem);font-size:.75rem;line-height:1.5;color:var(--ink-5);text-align:center}.bg-body{padding:clamp(3rem,6vh,5rem) var(--px) clamp(5rem,10vh,7rem)}.bg-body-inner{max-width:var(--container);margin:0 auto;display:grid;grid-template-columns:18rem 1fr;gap:clamp(2rem,5vw,5rem);align-items:start}@media(max-width:900px){.bg-body-inner{grid-template-columns:1fr;gap:2.5rem}}.bg-sidebar{position:sticky;top:100px;align-self:start;padding-top:clamp(4.75rem,8.2vh,6.5rem)}.bg-sidebar-heading{font-family:var(--font-display);font-size:1.375rem;font-weight:500;line-height:1.2;letter-spacing:-.02em;color:var(--ink);margin-bottom:.5rem}.bg-sidebar-sub{font-size:.875rem;line-height:1.5;color:var(--ink-3);margin-bottom:1.5rem}.bg-sidebar-sub strong{color:var(--teal-500);font-weight:600}.bg-toc{display:flex;flex-direction:column;gap:0}.bg-toc-link{display:flex;align-items:center;gap:.875rem;padding:.5rem 0;font-size:.875rem;line-height:1.4;color:var(--ink-5);cursor:pointer;transition:color .25s ease}.bg-toc-line{flex-shrink:0;width:.5rem;height:1px;background:var(--stone-300);transition:width .3s ease,background-color .3s ease}.bg-toc-link:hover{color:var(--ink-2)}.bg-toc-link:hover .bg-toc-line{width:1.25rem;background:var(--teal-500)}.bg-toc-link.active{color:var(--ink-2);font-weight:500}.bg-toc-link.active .bg-toc-line{width:1.25rem;background:var(--teal-500)}.bg-mobile-intro{display:none}@media(max-width:900px){.bg-sidebar{position:static;padding-top:0;min-width:0;width:100%}.bg-body-inner>*{min-width:0}.bg-mobile-intro{display:block;text-align:center;margin-bottom:1.5rem}.bg-mobile-intro h2{font-family:var(--font-display);font-size:1.5rem;font-weight:500;line-height:1.2;letter-spacing:-.02em;color:var(--ink);margin-bottom:.5rem}.bg-mobile-intro p{font-size:.9375rem;line-height:1.5;color:var(--ink-3)}.bg-mobile-intro p strong{color:var(--teal-500);font-weight:600}.bg-toc{display:flex;flex-direction:row;width:100%;max-width:100%;overflow-x:auto;overflow-y:visible;gap:4px;padding-bottom:4px;scrollbar-width:none;-ms-overflow-style:none;-webkit-overflow-scrolling:touch;touch-action:pan-x}.bg-toc::-webkit-scrollbar{display:none}.bg-toc-link{white-space:nowrap;padding:7px 12px;border-radius:100px;border:1px solid rgba(0,0,0,.06);background:#fff;flex-shrink:0;font-size:.8125rem;color:var(--ink-2)}.bg-toc-link.active{border-color:var(--teal-500);background:#147d8e0f;color:var(--teal-500)}.bg-toc-link:hover .bg-toc-line,.bg-toc-link.active .bg-toc-line{width:.5rem;background:var(--stone-300)}.bg-toc-line{display:none}.bg-hero-section{padding:7rem 1rem 1.25rem}.bg-hero{min-height:13rem;padding:2rem 1.5rem;border-radius:1.25rem}.bg-hero h1{font-size:2.25rem}.bg-hero p{font-size:.9375rem}.bg-fineprint{font-size:.6875rem;padding:0 1rem;margin-top:1rem}.bg-right-h2{margin-bottom:1.5rem;margin-top:1.5rem}}.bg-right{min-width:0}.bg-right-h2{font-family:var(--font-display);font-size:clamp(1.5rem,2.2vw,2rem);font-weight:500;line-height:1.15;letter-spacing:-.02em;color:var(--ink);margin-bottom:clamp(3rem,6vh,4.5rem)}.bg-cat{scroll-margin-top:90px;margin-bottom:clamp(2rem,4vh,3rem)}.bg-cat:last-child{margin-bottom:0}.bg-cat-head{display:flex;align-items:baseline;justify-content:space-between;gap:1rem;padding-bottom:.875rem;margin-bottom:.25rem;border-bottom:1px solid var(--stone-200)}.bg-cat-head h3{font-family:var(--font-display);font-size:clamp(1.25rem,1.6vw,1.5rem);font-weight:500;line-height:1.2;letter-spacing:-.015em;color:var(--ink)}.bg-cat-head-count{font-family:var(--font-mono);font-size:.75rem;color:var(--ink-4);flex-shrink:0}.bg-acc{display:flex;flex-direction:column}.bg-acc-item{border-bottom:1px solid var(--stone-200)}.bg-acc-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:1rem 0;background:none;text-align:left;font-family:var(--font-body);font-size:1rem;font-weight:500;color:var(--ink);transition:color .2s ease}.bg-acc-q:hover{color:var(--teal-600)}.bg-acc-q-en{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-4);font-weight:400;margin-left:.5rem}.bg-acc-icon{width:24px;height:24px;flex-shrink:0;position:relative;background:var(--stone-50);border-radius:5px;transition:background-color .25s ease}.bg-acc-icon:before,.bg-acc-icon:after{content:"";position:absolute;top:50%;left:50%;background:var(--ink-3);transition:transform .3s cubic-bezier(.4,0,.2,1),opacity .25s ease}.bg-acc-icon:before{width:10px;height:1.5px;transform:translate(-50%,-50%)}.bg-acc-icon:after{width:1.5px;height:10px;transform:translate(-50%,-50%)}.bg-acc-item[data-open=true] .bg-acc-icon{background:var(--stone-100)}.bg-acc-item[data-open=true] .bg-acc-icon:after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}.bg-acc-a{max-height:0;overflow:hidden;transition:max-height .35s cubic-bezier(.4,0,.2,1)}.bg-acc-a-inner{padding:0 0 1.25rem;font-size:.9375rem;line-height:1.6;color:var(--ink-3)}.bg-acc-a-inner p{margin-bottom:.875rem}.bg-acc-a-link{display:inline-flex;align-items:center;gap:5px;font-size:.875rem;font-weight:600;color:var(--teal-500);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;transition:color .2s ease}.bg-acc-a-link:hover{color:var(--teal-600)}.bg-acc-a-link svg{width:12px;height:12px;fill:currentColor}