:root{color:#1d1d1f;background:#f5f5f7;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,SF Pro Display,Segoe UI,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}*{box-sizing:border-box}body{margin:0;min-width:320px;background:linear-gradient(180deg,#ffffffd9,#f5f5f7f2 260px),#f5f5f7}button,input,textarea{font:inherit}button{cursor:pointer}.topbar{position:sticky;top:0;z-index:20;display:grid;grid-template-columns:auto minmax(180px,1fr) auto;gap:18px;align-items:center;padding:14px max(22px,calc((100vw - 1180px)/2));border-bottom:1px solid rgba(0,0,0,.08);background:#f5f5f7d1;-webkit-backdrop-filter:blur(22px);backdrop-filter:blur(22px)}.brand{display:inline-flex;align-items:center;gap:9px;border:0;background:transparent;color:#111;font-weight:700;letter-spacing:0}.brand__mark{display:grid;width:32px;height:32px;place-items:center;border-radius:9px;background:#111;color:#fff;font-size:.78rem}.search-box{display:flex;align-items:center;gap:9px;width:100%;min-height:42px;padding:0 14px;border:1px solid rgba(0,0,0,.08);border-radius:999px;background:#ffffffc7;color:#6e6e73}.search-box input{width:100%;min-width:0;border:0;outline:0;background:transparent;color:#1d1d1f}.topbar__actions,.button-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.icon-button{display:inline-grid;width:38px;height:38px;place-items:center;border:1px solid rgba(0,0,0,.08);border-radius:999px;background:#fffc;color:#1d1d1f;transition:transform .16s ease,background .16s ease}.icon-button:hover,.primary-button:hover,.secondary-button:hover{transform:translateY(-1px)}.feed-shell,.detail-shell{width:min(1180px,calc(100vw - 36px));margin:0 auto;padding:42px 0 72px}.feed-intro{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:22px;align-items:end;margin-bottom:28px}.eyebrow{margin:0 0 8px;color:#6e6e73;font-size:.86rem;font-weight:650}h1,h2,p{margin-top:0}.feed-intro h1{margin-bottom:8px;font-size:clamp(3.1rem,8vw,7rem);line-height:.92;letter-spacing:0}.feed-intro p,.panel p,.article-hero p,.ai-workspace p,.empty-state p{color:#6e6e73;line-height:1.55}.feed-intro__stats{display:grid;min-width:138px;gap:2px;padding:18px;border-radius:8px;background:#ffffffbd;border:1px solid rgba(0,0,0,.08)}.feed-intro__stats strong{font-size:2.2rem}.feed-intro__stats span{color:#6e6e73;font-size:.9rem}.category-tabs{display:flex;gap:8px;margin-bottom:26px;overflow-x:auto;padding:5px;border:1px solid rgba(0,0,0,.08);border-radius:999px;background:#ffffffa6}.category-tabs button{min-height:38px;white-space:nowrap;border:0;border-radius:999px;padding:0 16px;background:transparent;color:#515154;font-weight:650}.category-tabs button.active{background:#1d1d1f;color:#fff}.feed-grid,.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.article-card{display:flex;flex-direction:column;min-height:100%;overflow:hidden;border-radius:8px;background:#ffffffdb;border:1px solid rgba(0,0,0,.08);box-shadow:0 20px 50px #0000000d}.article-card--featured{grid-column:span 2}.article-card__media{display:block;width:100%;aspect-ratio:16 / 9;padding:0;overflow:hidden;border:0;background:#e8e8ed}.article-card__media img,.article-hero img{display:block;width:100%;height:100%;object-fit:cover}.article-card__media img{transition:transform .22s ease}.article-card:hover .article-card__media img{transform:scale(1.025)}.article-card__body{display:flex;flex:1;flex-direction:column;gap:12px;padding:17px}.article-card__meta{display:flex;gap:10px;flex-wrap:wrap;color:#86868b;font-size:.78rem;font-weight:650}.article-card__title{border:0;padding:0;background:transparent;color:#1d1d1f;text-align:left;font-size:1.08rem;font-weight:760;line-height:1.22}.article-card--featured .article-card__title{font-size:clamp(1.45rem,3vw,2.6rem);line-height:1.06}.article-card p{margin-bottom:0;color:#515154;line-height:1.52}.article-card__footer{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-top:auto}.article-card__footer a,.source-link{display:inline-flex;align-items:center;gap:6px;color:#06c;text-decoration:none;font-weight:650}.tag-row{display:flex;flex-wrap:wrap;gap:7px}.tag{display:inline-flex;align-items:center;min-height:24px;padding:0 9px;border-radius:999px;background:#ececf1;color:#515154;font-size:.78rem;font-weight:650}.empty-state,.ai-workspace,.related-section{margin-top:22px;padding:24px;border:1px solid rgba(0,0,0,.08);border-radius:8px;background:#ffffffdb}.empty-state{display:flex;align-items:center;justify-content:space-between;gap:18px}.primary-button,.secondary-button,.back-button{display:inline-flex;min-height:42px;align-items:center;justify-content:center;gap:8px;border-radius:999px;padding:0 17px;font-weight:720;transition:transform .16s ease,opacity .16s ease}.primary-button{border:0;background:#1d1d1f;color:#fff}.secondary-button,.back-button{border:1px solid rgba(0,0,0,.1);background:#fff;color:#1d1d1f}.primary-button:disabled,.secondary-button:disabled{cursor:not-allowed;opacity:.55}.back-button{margin-bottom:18px}.article-hero{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(320px,.95fr);overflow:hidden;border:1px solid rgba(0,0,0,.08);border-radius:8px;background:#fff}.article-hero img{min-height:420px}.article-hero__content{display:flex;flex-direction:column;gap:16px;justify-content:center;padding:clamp(24px,5vw,56px)}.article-hero h1{margin-bottom:0;font-size:clamp(2rem,5vw,4.5rem);line-height:.98;letter-spacing:0}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:50;display:flex;justify-content:flex-end;background:#00000047;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.panel{width:min(460px,100vw);height:100%;overflow-y:auto;padding:24px;background:#f5f5f7;box-shadow:-24px 0 60px #00000029}.panel--wide{width:min(680px,100vw)}.panel__header{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:24px}.panel__header h2,.ai-workspace h2,.related-section h2,.empty-state h2{margin-bottom:6px}.form-stack{display:grid;gap:16px}.settings-section{display:grid;gap:14px;padding:16px;border:1px solid rgba(0,0,0,.08);border-radius:8px;background:#ffffffb8}.settings-section h3{margin:0 0 4px;font-size:1rem}.settings-section p{margin:0;color:#6e6e73;line-height:1.45}.form-stack label{display:grid;gap:7px;color:#515154;font-size:.9rem;font-weight:680}.form-stack input,.ask-form textarea{width:100%;border:1px solid rgba(0,0,0,.1);border-radius:8px;background:#fff;color:#1d1d1f;outline:0}.form-stack input{min-height:44px;padding:0 13px}.ask-form{display:grid;gap:12px}.ask-form textarea{min-height:120px;resize:vertical;padding:13px;line-height:1.5}.status-line{margin:14px 0 0;color:#bf4800;font-weight:650}.answer-box{margin-top:16px;padding:18px;border-radius:8px;background:#fff;border:1px solid rgba(0,0,0,.08)}.answer-box p{white-space:pre-wrap;color:#1d1d1f}.citation-list{display:grid;gap:8px}.citation-list a{color:#06c;text-decoration:none;font-weight:650}@media(max-width:900px){.topbar{grid-template-columns:auto 1fr auto;gap:10px}.search-box{grid-column:1 / -1;grid-row:2}.feed-intro,.article-hero{grid-template-columns:1fr}.feed-intro__stats{width:fit-content}.feed-grid,.related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.article-card--featured{grid-column:span 2}.article-hero img{min-height:280px}}@media(max-width:620px){.feed-shell,.detail-shell{width:min(100vw - 24px,1180px);padding-top:26px}.topbar{padding-inline:12px}.feed-intro h1{font-size:3.4rem}.feed-grid,.related-grid{grid-template-columns:1fr}.article-card--featured{grid-column:span 1}.empty-state{align-items:flex-start;flex-direction:column}.panel{padding:18px}.modal-backdrop{justify-content:center}.category-tabs{border-radius:8px}}