: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}}.actions-block{display:flex;align-items:center;gap:.875rem;flex-wrap:nowrap}.actions-label{font-family:var(--font-body);font-size:.875rem;color:var(--ink-3);flex-shrink:0;white-space:nowrap}.actions-row{display:flex;align-items:center;gap:6px}.action-btn{width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;background:var(--white);border:1px solid rgba(0,0,0,.06);border-radius:9px;color:var(--ink-3);transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;position:relative;overflow:hidden}.action-btn:hover{background:var(--white);color:var(--ink);border-color:#00000026;transform:translateY(-1px);box-shadow:0 6px 14px #00000014}.action-btn.is-share:hover{background:var(--ink);color:#fff;border-color:var(--ink)}.action-btn img{width:20px;height:20px;object-fit:contain;display:block;border-radius:4px}.action-btn svg.is-chatgpt{width:18px;height:18px}.action-btn svg{width:16px;height:16px;fill:currentColor}.action-btn:after{content:attr(data-tooltip);position:absolute;bottom:calc(100% + 8px);left:50%;transform:translate(-50%) translateY(4px);background:var(--ink);color:#fff;font-size:11px;font-weight:500;padding:5px 10px;border-radius:6px;white-space:nowrap;opacity:0;pointer-events:none;transition:opacity .2s ease,transform .2s ease;z-index:10}.action-btn:hover:after{opacity:1;transform:translate(-50%) translateY(0)}.copy-feedback{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:var(--teal-500);border-radius:8px;opacity:0;visibility:hidden;transition:opacity .2s ease,visibility .2s ease}.copy-feedback.is-active{opacity:1;visibility:visible}.copy-feedback svg{fill:#fff}.bg-toc-side{position:sticky;top:100px;align-self:start}@media(max-width:900px){.bg-toc-side{position:static;padding-bottom:1.5rem;border-bottom:1px solid var(--stone-200)}}.bg-article p,.bg-article ul li,.bg-article ol li{font-family:var(--font-body);font-size:1.0625rem;line-height:1.75;color:var(--ink-2)}.bg-article p{margin-bottom:1.25rem}.bg-article>p:first-child{font-size:1.125rem;color:var(--ink-2)}.bg-article a{color:var(--teal-500);text-decoration:underline;text-underline-offset:2px}.bg-article a:hover{color:var(--teal-600)}.bg-more{padding:clamp(3rem,6vh,5rem) var(--px) clamp(4rem,7vh,5.5rem);background:#f5f5f5;border-top:1px solid var(--stone-200)}.bg-more-inner{max-width:1200px;margin:0 auto}.bg-more h2{font-family:var(--font-display);font-size:clamp(1.5rem,2.4vw,2rem);font-weight:400;line-height:1.15;letter-spacing:-.02em;color:var(--ink);margin-bottom:clamp(1.5rem,3vh,2.25rem)}.bg-more-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(1.25rem,2vw,1.75rem)}@media(max-width:900px){.bg-more-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:600px){.bg-more-grid{grid-template-columns:1fr}}.bg-more-card{display:flex;flex-direction:column;gap:.75rem}.bg-more-img{aspect-ratio:4 / 3;border-radius:12px;overflow:hidden;position:relative;margin-bottom:.25rem;transition:transform .3s cubic-bezier(.16,1,.3,1)}.bg-more-card:hover .bg-more-img{transform:scale(1.01)}.bg-more-img.cat-a{background:radial-gradient(60% 60% at 70% 30%,rgba(88,181,197,.5),transparent 65%),linear-gradient(135deg,var(--teal-500),var(--navy-800))}.bg-more-img.cat-b{background:radial-gradient(70% 60% at 30% 70%,rgba(245,200,120,.55),transparent 65%),linear-gradient(135deg,#c89858,var(--ink-2))}.bg-more-img.cat-c{background:radial-gradient(60% 60% at 50% 50%,rgba(88,181,197,.45),transparent 65%),linear-gradient(135deg,var(--teal-400),var(--navy-700))}.bg-more-img:after{content:"";position:absolute;inset:0;background:repeating-linear-gradient(115deg,transparent 0,transparent 22px,rgba(255,255,255,.045) 22px,rgba(255,255,255,.045) 23px)}.bg-more-date{font-family:var(--font-mono);font-size:.6875rem;font-weight:400;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-5)}.bg-more-card h4{font-family:var(--font-display);font-size:clamp(1.125rem,1.4vw,1.3125rem);font-weight:400;line-height:1.25;letter-spacing:-.015em;color:var(--ink);transition:color .2s ease}.bg-more-card:hover h4{color:var(--teal-600)}.bg-more-author{font-size:.8125rem;font-weight:400;color:var(--ink-4);margin-top:auto}@media(max-width:900px){.bg-hero{padding:6rem 1.25rem 2.5rem}.bg-hero h1{font-size:2rem}.bg-hero-sub{font-size:1rem}.bg-ai{flex-direction:column;align-items:flex-start;gap:.75rem}.bg-article p,.bg-article ul li{font-size:1rem;line-height:1.7}}.bg-sidebar-author{display:flex;flex-direction:column;gap:.375rem;padding-bottom:1.25rem;margin-bottom:1.25rem;border-bottom:1px solid var(--stone-200)}.bg-sidebar-author-label{font-family:var(--font-mono);font-size:.6875rem;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-5)}.bg-sidebar-author-name{font-size:.9375rem;color:var(--ink);font-weight:500}.bg-sidebar-author-sub{font-size:.8125rem;color:var(--ink-3);line-height:1.45}.bg-sources a{color:var(--teal-500);text-decoration:underline;word-break:break-word}.membership{padding:clamp(80px,12vh,140px) clamp(20px,6vw,80px);background:var(--white);border-top:1px solid rgba(0,0,0,.04)}.mem-subtitle{font-size:clamp(15px,1.15vw,17px);font-weight:400;line-height:1.7;color:var(--stone-500);max-width:480px;margin:0 auto}.value-anchor{font-size:13.5px;color:var(--stone-500);padding:14px 24px;border-radius:100px;background:var(--stone-100);display:inline-flex;align-items:center;gap:8px}.mem-card-core .mc-tier{color:var(--teal-700, var(--teal-700))}.mc-chip{width:20px;height:14px;border-radius:3px;background:#ffffff26;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);border:1px solid rgba(255,255,255,.1)}.mem-card-core .mc-chip{background:#147d8e1a;border-color:#147d8e26}.plan-core .plan-tagline{color:var(--stone-500)}.plan-core .plan-price-period,.plan-core .plan-price-note{color:var(--stone-400)}.plan-core .plan-cta:hover{background:var(--stone-700);box-shadow:0 4px 16px #0000001f}.plan-core .plan-divider{background:var(--stone-100)}.plan-core .plan-includes-label{color:var(--stone-400)}.plan-features{list-style:none;display:flex;flex-direction:column;gap:11px;padding:0;margin:0}.plan-feature{display:flex;align-items:flex-start;gap:10px;font-size:14px;line-height:1.5}.plan-core .plan-feature{color:var(--stone-600)}.pf-check{width:18px;height:18px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:1px}.pf-ext-img{width:36px;height:36px;border-radius:8px;overflow:hidden;flex-shrink:0;background:linear-gradient(135deg,#30a0b333,#147d8e1a)}.ts-item{display:flex;align-items:center;gap:6px;font-size:13.5px;font-weight:500;color:var(--stone-600)}.ts-dot{width:3px;height:3px;border-radius:50%;background:var(--stone-300);flex-shrink:0}@media(max-width:700px){.membership{padding-top:48px;padding-bottom:48px}}