/* Blog-only styles. Shared navigation, branding and footer use site.css. */
#rt-chat-concept .rb-shell{padding:52px clamp(24px,5vw,80px) 76px}
#rt-chat-concept .rb-breadcrumb{display:flex;flex-wrap:wrap;gap:10px;align-items:center;font-size:13px;color:#555d6c;margin-bottom:30px}
#rt-chat-concept .rb-breadcrumb a:hover{text-decoration:underline;text-underline-offset:4px}
#rt-chat-concept .rb-breadcrumb span[aria-current]{color:#161820}
#rt-chat-concept .rb-kicker{display:block;color:#2454ed;font-size:13px;font-weight:600;letter-spacing:.06em;text-transform:uppercase}
#rt-chat-concept .rb-intro h1{font-size:clamp(38px,4.6vw,64px);line-height:1.1;letter-spacing:-2px;max-width:980px;margin:18px 0 22px}
#rt-chat-concept .rb-intro>p{max-width:780px;font-size:19px;line-height:1.7;color:#555d6c}
#rt-chat-concept .rb-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;margin-top:25px;font-size:13px;color:#555d6c}
#rt-chat-concept .rb-meta a{text-decoration:underline;text-underline-offset:3px}
#rt-chat-concept .rb-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin-top:45px}
#rt-chat-concept .rb-card{display:flex;flex-direction:column;min-width:0;border:1px solid #d9dde7;border-radius:12px;padding:30px;background:#fff;transition:border-color .2s,box-shadow .2s}
#rt-chat-concept .rb-card:hover{border-color:#2454ed;box-shadow:0 6px 24px #11141d08}
#rt-chat-concept .rb-card:first-child{grid-column:1/-1;background:#eaf0ff;padding:36px}
#rt-chat-concept .rb-card h2{font-size:27px;letter-spacing:-.7px;line-height:1.25;margin:14px 0}
#rt-chat-concept .rb-card:first-child h2{font-size:34px;max-width:750px}
#rt-chat-concept .rb-card p{color:#555d6c;font-size:16px;line-height:1.7;max-width:760px;margin-bottom:25px}
#rt-chat-concept .rb-card-bottom{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-top:auto;font-size:13px;color:#555d6c}
#rt-chat-concept .rb-card-bottom strong{color:#2454ed;font-size:14px;font-weight:500}
#rt-chat-concept .rb-layout{display:grid;grid-template-columns:minmax(0,760px) minmax(180px,240px);gap:clamp(40px,5vw,80px);align-items:start;margin-top:46px;border-top:1px solid #d9dde7;padding-top:38px}
#rt-chat-concept .rb-body{min-width:0;font-size:18px;line-height:1.8;overflow-wrap:break-word}
#rt-chat-concept .rb-body section+section{margin-top:42px}
#rt-chat-concept .rb-body h2{font-size:28px;font-weight:600;line-height:1.3;letter-spacing:-.65px;margin:0 0 18px;scroll-margin-top:28px}
#rt-chat-concept .rb-body p{margin:0 0 18px;color:#343b48}
#rt-chat-concept .rb-body a{color:#1944ca;text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:1px}
#rt-chat-concept .rb-body ul{margin:18px 0 24px;padding-left:24px;color:#343b48}
#rt-chat-concept .rb-body li{padding-left:4px;margin-bottom:10px}
#rt-chat-concept .rb-note{background:#eaf0ff;border:1px solid #d4dffd;border-radius:10px;padding:25px;margin:26px 0}
#rt-chat-concept .rb-note strong{display:block;color:#161820;font-weight:600;margin-bottom:10px}
#rt-chat-concept .rb-note p:last-child{margin-bottom:0}
#rt-chat-concept .rb-body blockquote{margin:26px 0;padding:22px 25px;border-left:3px solid #2454ed;background:#fff;border-radius:0 8px 8px 0;font-style:normal}
#rt-chat-concept .rb-body blockquote p{margin:0}
#rt-chat-concept .rb-toc{position:sticky;top:28px;font-size:14px}
#rt-chat-concept .rb-toc h2{font-size:14px;font-weight:600;margin-bottom:14px}
#rt-chat-concept .rb-toc ol{list-style:none;margin:0;padding:0;border-left:1px solid #d9dde7}
#rt-chat-concept .rb-toc a{display:block;padding:9px 0 9px 18px;color:#555d6c;line-height:1.5}
#rt-chat-concept .rb-toc a:hover{color:#2454ed}
#rt-chat-concept .rb-table-wrap{max-width:100%;overflow-x:auto;margin:24px 0;border:1px solid #d9dde7;border-radius:8px;background:#fff}
#rt-chat-concept .rb-table-wrap table{width:100%;min-width:560px;border-collapse:collapse;font-size:15px;line-height:1.6}
#rt-chat-concept .rb-table-wrap th,#rt-chat-concept .rb-table-wrap td{text-align:left;vertical-align:top;padding:16px;border-bottom:1px solid #d9dde7}
#rt-chat-concept .rb-table-wrap thead{background:#eaf0ff}
#rt-chat-concept .rb-table-wrap tbody th{font-weight:500;width:30%}
#rt-chat-concept .rb-table-wrap tr:last-child td,#rt-chat-concept .rb-table-wrap tr:last-child th{border-bottom:0}
#rt-chat-concept .rb-table-wrap:focus-visible{outline:3px solid #7d9cff;outline-offset:3px}
#rt-chat-concept .rb-next{margin-top:56px;padding-top:32px;border-top:1px solid #d9dde7;max-width:1080px}
#rt-chat-concept .rb-next>h2{font-size:25px;letter-spacing:-.5px}
#rt-chat-concept .rb-related{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:20px}
#rt-chat-concept .rb-related a{display:block;padding:24px;border:1px solid #d9dde7;border-radius:10px;background:#fff}
#rt-chat-concept .rb-related a:hover{border-color:#2454ed}
#rt-chat-concept .rb-related h3{font-size:20px;line-height:1.4;font-weight:500;margin:10px 0 16px;letter-spacing:-.3px}
#rt-chat-concept .rb-related span:last-child{color:#2454ed;font-size:14px}
#rt-chat-concept .rb-help{margin-top:42px;display:flex;align-items:center;justify-content:space-between;gap:28px;background:#eaf0ff;border-radius:12px;padding:30px;max-width:1080px}
#rt-chat-concept .rb-help h2{font-size:25px;line-height:1.3;letter-spacing:-.5px;margin-bottom:8px}
#rt-chat-concept .rb-help p{color:#555d6c;font-size:16px}
#rt-chat-concept .rb-help .rt-primary{flex-shrink:0;white-space:nowrap}
@media(max-width:900px){#rt-chat-concept .rb-layout{grid-template-columns:minmax(0,1fr)}#rt-chat-concept .rb-toc{position:static;grid-row:1;background:#fff;border:1px solid #d9dde7;border-radius:10px;padding:22px}#rt-chat-concept .rb-toc ol{columns:2;column-gap:24px}#rt-chat-concept .rb-toc li{break-inside:avoid}#rt-chat-concept .rb-help{align-items:flex-start;flex-direction:column}}
@media(max-width:600px){#rt-chat-concept .rb-shell{padding-top:30px;padding-bottom:44px}#rt-chat-concept .rb-breadcrumb{margin-bottom:24px;font-size:12px}#rt-chat-concept .rb-intro h1{font-size:36px;line-height:1.13;letter-spacing:-1.3px}#rt-chat-concept .rb-intro>p{font-size:17px}#rt-chat-concept .rb-meta{gap:8px 14px;font-size:12px}#rt-chat-concept .rb-list,#rt-chat-concept .rb-related{grid-template-columns:minmax(0,1fr);gap:18px}#rt-chat-concept .rb-list{margin-top:32px}#rt-chat-concept .rb-card,#rt-chat-concept .rb-card:first-child{padding:23px}#rt-chat-concept .rb-card h2,#rt-chat-concept .rb-card:first-child h2{font-size:26px}#rt-chat-concept .rb-layout{margin-top:30px;padding-top:26px;gap:30px}#rt-chat-concept .rb-body{font-size:17px;line-height:1.75}#rt-chat-concept .rb-body h2{font-size:25px}#rt-chat-concept .rb-toc ol{columns:1}#rt-chat-concept .rb-toc a{padding-top:8px;padding-bottom:8px}#rt-chat-concept .rb-note,#rt-chat-concept .rb-body blockquote{padding:20px}#rt-chat-concept .rb-help{padding:24px}#rt-chat-concept .rb-help .rt-primary{width:100%}}