:root{
  --brand:#1F3A5F;--accent:#2A7F8E;--ink:#1D2939;--muted:#667085;--line:#D9DEE6;--bg:#F5F7FA;--tint:#EEF3F8;
  --red:#B42318;--red-soft:#FEE4E2;--amber:#B54708;--amber-soft:#FEF0C7;--green:#067647;--green-soft:#D1FADF;
  --radius:10px;
}
*{box-sizing:border-box}
html,body{margin:0}
:root{padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
body{font-family:"Segoe UI",system-ui,-apple-system,Roboto,"Helvetica Neue",Arial,sans-serif;color:var(--ink);background:var(--bg);font-size:16px;line-height:1.55;-webkit-text-size-adjust:100%}
a{color:var(--accent)}
button,input,select,textarea{font:inherit;color:inherit}
img{max-width:100%;height:auto}
.skip{position:absolute;left:-9999px}.skip:focus{left:12px;top:12px;background:#fff;padding:8px 12px;z-index:50}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}
.narrow{max-width:760px}
.muted{color:var(--muted)}
.ok{color:var(--green);font-weight:600}.warn{color:var(--amber);font-weight:600}
:focus-visible{outline:3px solid #F5B942;outline-offset:2px}
main:focus,main:focus-visible,#view:focus,#view:focus-visible{outline:none}

/* header */
header.site{background:var(--brand);color:#fff;position:sticky;top:0;z-index:10}
header.site .bar{max-width:1180px;margin:0 auto;padding:12px 20px;display:flex;align-items:center;gap:16px}
.brand{color:#fff;text-decoration:none;font-weight:700;font-size:18px;display:flex;align-items:center;gap:10px;white-space:nowrap}
.mark{width:26px;height:26px;border-radius:7px;background:var(--accent);box-shadow:inset 0 0 0 3px rgba(255,255,255,.25)}
.topsearch{flex:1;max-width:420px;margin-left:auto}
.topsearch input{width:100%;border:0;border-radius:8px;padding:9px 12px;font-size:15px}
.adminlink{color:#fff;font-size:14px;margin-left:auto;border:1px solid rgba(255,255,255,.45);padding:6px 12px;border-radius:7px;text-decoration:none}
.topsearch:not([hidden])+.adminlink{margin-left:0}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:1px solid transparent;border-radius:8px;padding:10px 18px;font-weight:600;cursor:pointer;text-decoration:none;font-size:15px;line-height:1.2;white-space:nowrap}
.btn.primary{background:var(--accent);color:#fff}.btn.primary:hover{filter:brightness(.93)}
.btn.line{background:#fff;color:var(--brand);border-color:var(--line)}.btn.line:hover{border-color:var(--brand)}
.btn.danger{background:#fff;color:var(--red);border-color:#F4B8B2}.btn.danger:hover{background:var(--red-soft)}
.btn.sm{padding:6px 12px;font-size:13.5px}
.btn:disabled{opacity:.55;cursor:default}

/* hero + ask */
.hero{background:linear-gradient(180deg,var(--brand) 0,var(--brand) 55%,var(--bg) 55%);padding:34px 0 8px}
.hero h1{color:#fff;margin:0;font-size:32px;line-height:1.2}
.hero .lead{color:#D5E0EC;margin:8px 0 18px}
.ask{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;box-shadow:0 8px 24px rgba(16,24,40,.08)}
.ask-label{display:block;font-weight:700;color:var(--brand);margin-bottom:8px}
.ask-row{display:flex;gap:10px}
.ask-row input{flex:1;min-width:0;border:1px solid #98A2B3;border-radius:8px;padding:12px 14px;font-size:16px}
.hint{margin:8px 0 0;font-size:13.5px;color:var(--muted)}
.answer{margin-top:14px;background:#fff;border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:var(--radius);padding:16px 18px}
.answer.none{border-left-color:var(--amber)}
.answer.loading{color:var(--muted)}
.answer h3{font-size:14px;margin:14px 0 6px;color:var(--brand)}
.answer-text{font-size:16px}
.cite{display:inline-flex;align-items:center;justify-content:center;min-width:20px;height:20px;border-radius:10px;background:var(--accent);color:#fff;font-size:12px;font-weight:700;text-decoration:none;vertical-align:1px;margin:0 1px;padding:0 5px}
.cites{list-style:none;padding:0;margin:0}.cites li{margin:4px 0}
.cites a{display:flex;align-items:center;gap:8px;text-decoration:none}
.cnum{display:inline-flex;align-items:center;justify-content:center;width:20px;height:20px;border-radius:10px;background:var(--tint);color:var(--brand);font-size:12px;font-weight:700;flex:none}
.qfb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:14px;padding-top:12px;border-top:1px solid var(--line);font-size:14px}

/* sections / cards */
section{margin:30px 0}
h2{font-size:20px;color:var(--brand);margin:0 0 12px}
.cats{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px;align-items:stretch}
.cat{display:flex;flex-direction:column;gap:4px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px;text-decoration:none;color:var(--ink);height:100%}
.cat:hover{border-color:var(--accent)}
.cat-icon{font-size:24px;line-height:1}
.cat-name{font-weight:700;color:var(--brand);font-size:17px}
.cat-desc{color:#475467;font-size:14px;flex:1}
.cat-n{color:var(--muted);font-size:13px;margin-top:6px}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:14px;align-items:stretch}
.acard{display:flex;flex-direction:column;gap:4px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px;text-decoration:none;color:var(--ink);height:100%}
.acard:hover{border-color:var(--accent)}
.acard-cat{font-size:12.5px;color:var(--accent);font-weight:700}
.acard-title{font-weight:700;font-size:17px;color:var(--brand);line-height:1.3}
.acard-sum{font-size:14px;color:#475467;flex:1}
.acard-meta{font-size:12.5px;color:var(--muted);margin-top:6px}

.crumbs{font-size:14px;color:var(--muted);margin:22px 0 8px}.crumbs a{color:var(--muted)}
.pagetitle{font-size:28px;color:var(--brand);margin:0 0 6px;line-height:1.25}
.lead{font-size:17px;color:#475467}
.results{list-style:none;padding:0}.results li{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;margin-bottom:10px}
.rtitle{font-weight:700;font-size:17px;text-decoration:none}
.rmeta{font-size:13px;color:var(--muted)}
.results p{margin:6px 0 0;font-size:14.5px;color:#475467}
mark{background:#FFF1B8;padding:0 2px;border-radius:2px}

/* article */
.artwrap{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:28px;align-items:start;padding-bottom:30px}
.art h1{font-size:30px;color:var(--brand);line-height:1.2;margin:4px 0 8px}
.artmeta{display:flex;flex-wrap:wrap;gap:6px 16px;font-size:13.5px;color:var(--muted);padding:10px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-bottom:10px}
.body{font-size:16.5px}
.body h2{margin:30px 0 10px;padding-bottom:6px;border-bottom:2px solid var(--accent);font-size:22px}
.body h3{color:var(--brand);font-size:18px;margin:22px 0 8px}
.body table{border-collapse:collapse;width:100%;margin:14px 0;font-size:15px;display:block;overflow-x:auto}
.body th{background:var(--brand);color:#fff;text-align:left;padding:9px 12px}
.body td{border-bottom:1px solid var(--line);padding:9px 12px;vertical-align:top;background:#fff}
.body tr:nth-child(even) td{background:#FAFBFC}
.body code{background:var(--tint);padding:1px 5px;border-radius:4px;font-size:.92em}
.body img{border-radius:8px}
.body{counter-reset:kbstep}
.kb-step{display:grid;grid-template-columns:220px minmax(0,1fr);gap:22px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;margin:16px 0;counter-increment:kbstep;align-items:start}
.kb-step.noimg{grid-template-columns:1fr}
.kb-shot{margin:0}
.kb-shot img{display:block;width:100%;border-radius:18px}
.kb-step-body h3{margin:0 0 8px}
.kb-step-body h3::before{content:"Step " counter(kbstep);display:block;font-size:12.5px;font-weight:700;color:var(--accent);margin-bottom:2px}
.kb-step-body ol,.kb-step-body ul{padding-left:22px}
.kb-step-body li{margin:4px 0}
li.legend{list-style:none;margin-left:-22px;font-size:14.5px}
.badge{display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;border-radius:11px;background:#D92D20;color:#fff;font-weight:700;font-size:12.5px;margin-right:6px}
.callout,.body blockquote.callout{margin:16px 0;border-radius:8px;padding:12px 16px;border-left:5px solid;background:var(--tint)}
.callout p{margin:0}
.callout-label{margin-right:6px}
.callout.tip{background:#E6F4F1;border-color:#0F6E5C}.callout.tip .callout-label{color:#0F6E5C}
.callout.important,.callout.warning{background:#FEF3F2;border-color:var(--red)}.callout.important .callout-label,.callout.warning .callout-label{color:var(--red)}
.callout.note{background:var(--tint);border-color:var(--brand)}.callout.note .callout-label{color:var(--brand)}
.body blockquote{margin:16px 0;border-left:4px solid var(--line);padding:4px 16px;color:#475467}
.fb{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;margin:30px 0}
.fb h2{font-size:17px;margin:0 0 10px}
.fbrow{display:flex;gap:10px;margin-top:10px}
.fb textarea{width:100%;border:1px solid #98A2B3;border-radius:8px;padding:10px}
.side{position:sticky;top:80px;display:flex;flex-direction:column;gap:14px;margin-top:56px}
.sidebox,.support{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px}
.sidebox h2,.support h2{font-size:16px;margin:0 0 8px}
.sidebox ul{padding-left:18px;margin:0}.sidebox li{margin:6px 0;font-size:15px}
.support p{margin:6px 0;font-size:14.5px}
.support{margin-top:10px}

footer.site{border-top:1px solid var(--line);background:#fff;margin-top:40px}
.foot{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;padding-top:18px;padding-bottom:22px;font-size:14px}

@media (max-width:900px){.artwrap{grid-template-columns:1fr}.side{position:static;margin-top:0}}
@media (max-width:640px){
  .hero h1{font-size:25px}.ask-row{flex-direction:column}.ask-row .btn{width:100%}
  .kb-step{grid-template-columns:1fr}.kb-shot{max-width:240px;margin:0 auto}
  .art h1{font-size:25px}.brand span:last-child{font-size:16px}
  header.site .bar{flex-wrap:wrap}.topsearch{order:3;max-width:none;flex-basis:100%}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}
@media print{header.site,footer.site,.side,.fb,.topsearch{display:none!important}.artwrap{display:block}}