:root{
  --blue:#1f56d6; --blue-d:#1843ab; --tint:#eef3ff; --tint-line:#d6deec;
  --ink:#121722; --ink2:#26324a; --muted:#566072; --faint:#8a93a3;
  --line:#e3e7ee; --line2:#eef1f5; --bg:#f7f8fa; --white:#fff;
  --r:16px; --pill:999px;
  --font:"Plus Jakarta Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:24px}
body{margin:0;font-family:var(--font);background:var(--bg);color:var(--ink);font-size:16px;line-height:1.5}
a{color:var(--blue);text-decoration:none}
a:hover{color:var(--blue-d)}
:focus-visible{outline:3px solid #7aa2ff;outline-offset:2px;border-radius:6px}
img{max-width:100%;height:auto}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-999px;top:8px;background:var(--ink);color:#fff;padding:8px 14px;border-radius:8px;z-index:10}
.skip:focus{left:8px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 22px;border-radius:var(--pill);font:inherit;font-weight:700;font-size:15px;border:1px solid transparent;cursor:pointer;white-space:nowrap}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:var(--blue-d);color:#fff}
.btn-outline{background:#fff;border-color:#cdd6e6;color:var(--ink)}
.btn-outline:hover{border-color:var(--blue);color:var(--blue)}
.btn-outline[aria-pressed="true"]{background:var(--tint);border-color:var(--blue);color:var(--blue)}
.btn-light{background:#fff;color:var(--ink)}
.btn-light:hover{color:var(--blue)}
.btn-ghost-dark{border-color:#4a5366;color:#fff}
.btn-ghost-dark:hover{border-color:#fff;color:#fff}

/* header */
.kb-top{background:#fff;border-bottom:1px solid var(--line)}
.kb-top__in{max-width:1280px;margin:0 auto;padding:0 48px;display:flex;align-items:center;gap:28px}
.kb-top .kb-top__in{min-height:72px}
.kb-brand{display:flex;align-items:center;gap:12px;color:var(--ink);flex-shrink:0}
.kb-brand:hover{color:var(--ink)}
.kb-brand__mark{width:32px;height:32px;border-radius:8px;background:var(--blue)}
.kb-brand__name{font-size:20px;font-weight:800;letter-spacing:-.02em}
.kb-brand__sub{font-size:15px;font-weight:500;color:var(--muted);padding-left:12px;border-left:1px solid var(--line)}
.kb-topsearch{flex:1;max-width:520px;height:44px;border:1px solid var(--tint-line);border-radius:var(--pill);background:var(--bg);display:flex;align-items:center;gap:10px;padding:0 18px;color:var(--muted)}
.kb-topsearch:focus-within{border-color:var(--blue);background:#fff}
.kb-topsearch input{flex:1;border:0;outline:0;background:transparent;font:inherit;font-size:15px;color:var(--ink);min-width:0}
.kb-top__nav{margin-left:auto;display:flex;align-items:center;gap:24px;font-size:15px;font-weight:600}
.kb-top__back{color:var(--ink)}
.kb-shop{font-size:13px;font-weight:600;color:var(--muted);background:var(--bg);border:1px solid var(--line);padding:4px 10px;border-radius:var(--pill)}
.kb-adminbar{background:#fff7e6;border-bottom:1px solid #f3d99b;font-size:14px;color:#5c3d00}
.kb-adminbar .kb-top__in{min-height:40px}

/* layout */
.kb-wrap{max-width:1280px;margin:0 auto;padding:0 48px}
.kb-empty{padding-top:80px;padding-bottom:80px;text-align:center}
.kb-empty h1{font-size:34px;margin:0 0 8px;letter-spacing:-.02em}
.kb-empty p{color:var(--muted)}

/* hero */
.kb-hero{background:var(--tint);padding:72px 24px 64px;text-align:center}
.kb-hero h1{margin:0;font-size:48px;font-weight:800;letter-spacing:-.03em;line-height:1.1}
.kb-hero p{margin:14px 0 0;font-size:18px;color:#3f4858}
.kb-bigsearch{margin:32px auto 0;max-width:720px;height:64px;background:#fff;border:1px solid #cdd6e6;border-radius:var(--pill);display:flex;align-items:center;gap:12px;padding:0 8px 0 24px;color:var(--muted)}
.kb-bigsearch:focus-within{border-color:var(--blue);box-shadow:0 0 0 4px rgba(31,86,214,.12)}
.kb-bigsearch input{flex:1;border:0;outline:0;font:inherit;font-size:17px;color:var(--ink);background:transparent;min-width:0}
.kb-bigsearch .btn{min-height:48px;padding:0 26px}
.kb-chips{margin-top:20px;display:flex;flex-wrap:wrap;justify-content:center;gap:10px;align-items:center;font-size:14px}
.kb-chips span{color:var(--muted)}
.kb-chip{padding:6px 14px;border-radius:var(--pill);background:#fff;border:1px solid var(--tint-line);color:var(--ink2)}
.kb-chip:hover{border-color:var(--blue);color:var(--blue)}

/* sections */
.kb-sec{padding-top:56px}
.kb-sec>h2,.kb-col>h2{margin:0 0 20px;font-size:22px;font-weight:700}
.kb-cats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.kb-cat{display:flex;flex-direction:column;gap:10px;padding:24px;background:#fff;border:1px solid var(--line);border-radius:var(--r);color:var(--ink)}
.kb-cat:hover{border-color:#b9c7e3;color:var(--ink)}
.kb-cat__ic{width:44px;height:44px;border-radius:12px;background:var(--tint);color:var(--blue);display:flex;align-items:center;justify-content:center}
.kb-cat__t{font-size:18px;font-weight:700}
.kb-cat__d{font-size:15px;color:var(--muted);line-height:1.5}
.kb-cat__n{font-size:13px;font-weight:600;color:var(--muted);margin-top:auto}

.kb-two{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:40px}
.kb-list{background:#fff;border:1px solid var(--line);border-radius:var(--r);display:flex;flex-direction:column;overflow:hidden}
.kb-list>a{padding:18px 22px;border-top:1px solid var(--line2);font-size:16px;font-weight:600;display:flex;justify-content:space-between;align-items:center;gap:12px;color:var(--blue)}
.kb-list>a:first-child{border-top:0}
.kb-list>a:hover{background:#fafbff}
.kb-list .chev{color:var(--faint);font-weight:400}
.kb-list .stack{display:flex;flex-direction:column;gap:4px;color:var(--ink)}
.kb-list .meta{font-size:13px;font-weight:600;color:var(--muted)}
.kb-list .desc{font-size:15px;font-weight:400;color:var(--muted);line-height:1.5}
.kb-lock{display:inline-flex;align-items:center;gap:4px;font-size:12px;font-weight:700;color:#3d2a91;background:#ece8ff;padding:3px 9px;border-radius:var(--pill);white-space:nowrap}

/* support band */
.kb-support{margin:56px 0 0;padding:36px 40px;background:var(--ink);border-radius:20px;display:flex;align-items:center;justify-content:space-between;gap:32px;color:#fff}
.kb-support h2{margin:0 0 8px;font-size:26px;font-weight:800}
.kb-support p{margin:0;font-size:16px;color:#c7cedb;line-height:1.5}
.kb-support__actions{display:flex;gap:12px;flex-wrap:wrap;flex-shrink:0}
.kb-foot{padding:40px 0 32px;font-size:14px;color:var(--muted)}
.kb-foot .kb-top__in{justify-content:space-between}

/* article layout */
.kb-doc{display:grid;grid-template-columns:240px minmax(0,1fr) 200px;gap:48px;padding-top:40px;padding-bottom:56px}
.kb-doc--2{grid-template-columns:240px minmax(0,1fr)}
.kb-side{display:flex;flex-direction:column;gap:2px;align-self:start;position:sticky;top:24px}
.kb-side__h{font-size:14px;font-weight:700;color:var(--muted);padding:0 12px 10px}
.kb-side a{padding:10px 12px;border-radius:10px;font-size:15px;color:var(--ink2);line-height:1.35}
.kb-side a:hover{background:var(--bg);color:var(--ink)}
.kb-side a[aria-current="page"]{font-weight:700;color:var(--blue);background:var(--tint)}
.kb-side hr{border:0;height:1px;background:var(--line);margin:16px 12px}
.kb-side .all{font-weight:600;color:var(--blue)}
.kb-crumbs{font-size:14px;color:var(--muted);display:flex;flex-wrap:wrap;gap:8px}
.kb-crumbs span[aria-current]{color:var(--ink2)}
body.is-white{background:#fff}
.kb-main{min-width:0}
.kb-main h1{margin:16px 0 8px;font-size:38px;font-weight:800;letter-spacing:-.025em;line-height:1.15}
.kb-meta{font-size:14px;color:var(--muted)}
.kb-lede{font-size:18px;color:var(--ink2);line-height:1.65;margin:20px 0 0}

.kb-body{font-size:17px;line-height:1.7;color:var(--ink2);margin-top:22px;max-width:760px}
.kb-body h2{font-size:24px;font-weight:700;color:var(--ink);margin:40px 0 12px;line-height:1.3}
.kb-body h3{font-size:19px;font-weight:700;color:var(--ink);margin:28px 0 8px}
.kb-body p{margin:0 0 16px}
.kb-body ul{padding-left:22px;margin:0 0 16px}
.kb-body li{margin:4px 0}
.kb-body ol{list-style:none;padding:0;margin:0 0 20px;counter-reset:step}
.kb-body ol>li{counter-increment:step;position:relative;padding-left:48px;margin:0 0 16px;min-height:32px;padding-top:3px}
.kb-body ol>li::before{content:counter(step);position:absolute;left:0;top:0;width:32px;height:32px;border-radius:50%;background:var(--blue);color:#fff;font-weight:700;font-size:15px;display:flex;align-items:center;justify-content:center}
.kb-body strong{color:var(--ink)}
.kb-body img{display:block;border-radius:14px;border:1px solid var(--line);margin:8px 0 20px}
.kb-body code{font-size:.88em;background:var(--bg);border:1px solid var(--line);padding:1px 6px;border-radius:6px}
.kb-body pre{background:var(--ink);color:#e7ebf3;padding:16px 18px;border-radius:12px;overflow-x:auto;font-size:14px}
.kb-body pre code{background:none;border:0;padding:0;color:inherit}
.kb-body blockquote{margin:0 0 16px;padding:4px 18px;border-radius:12px;background:var(--bg);color:var(--muted)}
.kb-body a{text-decoration:underline;text-underline-offset:2px}
.kb-table{overflow-x:auto;margin:0 0 20px}
.kb-body table{border-collapse:collapse;width:100%;font-size:15px}
.kb-body th,.kb-body td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.kb-body th{background:var(--bg);color:var(--ink)}
.kb-callout{display:flex;gap:14px;padding:18px 20px;border-radius:14px;background:#fff7e6;border:1px solid #f3d99b;color:#5c3d00;margin:8px 0 20px;font-size:16px}
.kb-callout--note{background:var(--tint);border-color:#c8d6f5;color:#1d3470}
.kb-callout--warning{background:#fdeceb;border-color:#f3c1bd;color:#7a1e16}
.kb-callout__icon{flex-shrink:0;margin-top:3px}
.kb-callout__body p:last-child{margin-bottom:0}
.kb-callout__label{display:block;color:inherit;margin-bottom:2px}
.kb-callout strong{color:inherit}

.kb-toc{display:flex;flex-direction:column;gap:10px;align-self:start;position:sticky;top:24px;padding-top:44px}
.kb-toc__h{font-size:14px;font-weight:700;color:var(--muted)}
.kb-toc a{font-size:14px;color:var(--ink2)}
.kb-toc a.is-active{font-weight:700;color:var(--blue)}

.kb-helpful{margin-top:32px;padding:22px 24px;border:1px solid var(--line);border-radius:14px;max-width:760px}
.kb-helpful__row{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.kb-helpful__q{font-size:17px;font-weight:700}
.kb-helpful__btns{display:flex;gap:10px}
.kb-helpful textarea{width:100%;margin-top:14px;min-height:90px;border:1px solid var(--tint-line);border-radius:12px;padding:12px 14px;font:inherit;font-size:15px;resize:vertical}
.kb-helpful .done{color:#0f6b3a;font-weight:600}
.kb-related{margin-top:32px;max-width:760px}
.kb-related h2{font-size:20px;margin:0 0 14px}
.kb-related__grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.kb-related__grid a{padding:18px;border:1px solid var(--line);border-radius:14px;color:var(--ink);font-weight:600;font-size:15px;line-height:1.4;background:#fff}
.kb-related__grid a:hover{border-color:#b9c7e3}
.kb-gate{margin-top:28px;padding:40px;border-radius:20px;background:var(--tint);text-align:center;max-width:760px}
.kb-gate__ic{width:56px;height:56px;border-radius:16px;background:#fff;color:var(--blue);display:inline-flex;align-items:center;justify-content:center}
.kb-gate h2{margin:16px 0 8px;font-size:24px}
.kb-gate p{margin:0 0 20px;color:var(--ink2)}
.kb-draft{margin-top:16px;padding:10px 14px;border-radius:10px;background:#fff1d6;color:#7a4b00;font-size:14px;font-weight:600}

/* search */
.kb-shero{background:var(--tint);padding:36px 0}
.kb-shero .kb-bigsearch{margin:0;height:56px;max-width:760px;border:2px solid var(--blue);padding:0 8px 0 20px}
.kb-shero .count{margin-top:14px;font-size:15px;color:#3f4858}
.kb-results{display:grid;grid-template-columns:220px minmax(0,1fr);gap:48px;padding-top:36px;padding-bottom:48px}
.kb-filter{display:flex;flex-direction:column;gap:8px;align-self:start}
.kb-filter__h{font-size:14px;font-weight:700;color:var(--muted);margin-bottom:6px}
.kb-filter label{display:flex;align-items:center;gap:10px;font-size:15px;min-height:36px;cursor:pointer}
.kb-filter input{width:18px;height:18px;accent-color:var(--blue)}
.kb-filter .btn{margin-top:8px;min-height:40px;font-size:14px}
.kb-hits{display:flex;flex-direction:column;gap:14px}
.kb-hit{display:flex;flex-direction:column;gap:8px;padding:22px 24px;background:#fff;border:1px solid var(--line);border-radius:var(--r);color:var(--ink)}
.kb-hit:hover{border-color:#b9c7e3;color:var(--ink)}
.kb-hit__tags{display:flex;gap:8px;flex-wrap:wrap}
.kb-tag{font-size:12px;font-weight:700;color:var(--blue);background:var(--tint);padding:4px 10px;border-radius:var(--pill)}
.kb-hit__t{font-size:19px;font-weight:700}
.kb-hit__s{font-size:15px;color:var(--muted);line-height:1.55}
mark{background:#fde9a8;color:inherit;border-radius:3px;padding:0 2px}
.kb-nohit{padding:22px 24px;border-radius:var(--r);border:1px dashed #cdd6e6;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.kb-nohit span{color:#3f4858}
.kb-nohit a{font-weight:700}

/* category page */
.kb-cathead{display:flex;gap:16px;align-items:center;margin:16px 0 8px}
.kb-cathead h1{margin:0}

/* contact */
.kb-form{max-width:640px;display:flex;flex-direction:column;gap:18px;margin-top:24px}
.kb-field{display:flex;flex-direction:column;gap:6px}
.kb-field label{font-size:14px;font-weight:700;color:var(--ink2)}
.kb-field input,.kb-field textarea{border:1px solid var(--tint-line);border-radius:12px;padding:12px 14px;font:inherit;font-size:16px;background:#fff;color:var(--ink)}
.kb-field textarea{min-height:160px;resize:vertical}
.kb-field input:focus,.kb-field textarea:focus{outline:0;border-color:var(--blue);box-shadow:0 0 0 3px rgba(31,86,214,.12)}
.kb-hp{position:absolute;left:-5000px}
.kb-alert{padding:14px 18px;border-radius:12px;font-size:15px;font-weight:600;margin-top:16px}
.kb-alert--ok{background:#e3f5ea;color:#0f6b3a}
.kb-alert--err{background:#fdeceb;color:#7a1e16}

/* responsive */
@media (max-width:1100px){
  .kb-doc{grid-template-columns:220px minmax(0,1fr)}
  .kb-toc{display:none}
}
@media (max-width:860px){
  .kb-top__in,.kb-wrap{padding:0 20px}
  .kb-top .kb-top__in{flex-wrap:wrap;gap:12px;padding-top:12px;padding-bottom:12px}
  .kb-topsearch{order:3;flex-basis:100%;max-width:none}
  .kb-top__back,.kb-brand__sub,.kb-shop{display:none}
  .kb-top__nav{gap:12px}
  .kb-hero{padding:48px 20px 40px}
  .kb-hero h1{font-size:34px}
  .kb-bigsearch{height:56px}
  .kb-bigsearch .btn{display:none}
  .kb-cats{grid-template-columns:1fr}
  .kb-two{grid-template-columns:1fr;gap:32px}
  .kb-support{flex-direction:column;align-items:flex-start;padding:28px 24px}
  .kb-doc,.kb-doc--2,.kb-results{grid-template-columns:1fr;gap:24px}
  .kb-side{position:static;order:2}
  .kb-main h1{font-size:30px}
  .kb-related__grid{grid-template-columns:1fr}
  .kb-shero{padding:24px 0}
  .kb-shero .kb-bigsearch .btn{display:none}
  .kb-filter{flex-direction:row;flex-wrap:wrap;gap:4px 16px}
  .kb-filter__h{flex-basis:100%;margin:0}
}
@media (min-width:861px) and (max-width:1100px){
  .kb-cats{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* video */
.kb-video{position:relative;aspect-ratio:16/9;max-width:760px;margin:24px 0 4px;border-radius:14px;overflow:hidden;background:var(--ink)}
.kb-video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.kb-vbadge{display:inline-flex;align-items:center;gap:4px;font-size:12px;font-weight:700;color:#0f5c6b;background:#e0f3f6;padding:3px 9px;border-radius:var(--pill);white-space:nowrap;vertical-align:middle}