/* VYSN AI Help Center. Layout: top bar, search hero, topic grid; articles use a left topic list + readable column. */
@font-face{font-family:'Instrument Sans';font-weight:600;font-display:swap;src:url(fonts/instrument-sans-latin-600-normal.woff2) format('woff2')}
@font-face{font-family:'Instrument Sans';font-weight:700;font-display:swap;src:url(fonts/instrument-sans-latin-700-normal.woff2) format('woff2')}
@font-face{font-family:'Inter';font-weight:400;font-display:swap;src:url(fonts/inter-latin-400-normal.woff2) format('woff2')}
@font-face{font-family:'Inter';font-weight:600;font-display:swap;src:url(fonts/inter-latin-600-normal.woff2) format('woff2')}
:root{
  --bg:#f4f3f8; --card:#ffffff; --ink:#17151f; --soft:#4f4b63; --muted:#6c6880; --line:rgba(26,20,48,.09);
  --accent:#6a4fe0; --accent-soft:#efeaff; --glow:rgba(176,150,255,.40); --sos:#c4282d;
  --display:'Instrument Sans','Inter',system-ui,sans-serif; --body:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#121019; --card:#1c1928; --ink:#f2f0fa; --soft:#c8c3da; --muted:#a29db7; --line:rgba(255,255,255,.08);
  --accent:#b9a8ff; --accent-soft:#2a2440; --glow:rgba(138,108,247,.32); --sos:#ff8f8a; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#121019; --card:#1c1928; --ink:#f2f0fa; --soft:#c8c3da; --muted:#a29db7; --line:rgba(255,255,255,.08);
  --accent:#b9a8ff; --accent-soft:#2a2440; --glow:rgba(138,108,247,.32); --sos:#ff8f8a; color-scheme:dark}
*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--bg);color:var(--ink);font:16px/1.65 var(--body);-webkit-font-smoothing:antialiased}
h1,h2,h3{font-family:var(--display);letter-spacing:-.015em;text-wrap:balance;margin:0}
a{color:var(--accent)}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:6px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.btn{display:inline-flex;align-items:center;min-height:40px;padding:0 18px;border-radius:999px;background:var(--accent);color:var(--card);text-decoration:none;font:600 15px var(--display)}

.top{position:sticky;top:0;z-index:5;display:flex;align-items:center;gap:16px;padding:10px max(16px,calc((100% - 1120px)/2));
  background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font:600 18px var(--display)}
.brand b{color:var(--accent)}
.top nav{margin-left:auto;display:flex;align-items:center;gap:14px}
.top nav>a:not(.btn){color:var(--soft);text-decoration:none;font-weight:600;font-size:15px}

.hero{text-align:center;padding:56px 16px 36px;background:radial-gradient(70% 100% at 50% 0%,var(--glow),transparent 70%)}
.hero h1{font-size:clamp(32px,5vw,46px)}
.hero>p{color:var(--soft);margin:8px 0 24px}
.search{position:relative;max-width:620px;margin:0 auto}
.search svg{position:absolute;left:18px;top:50%;transform:translateY(-50%);width:20px;height:20px;fill:none;stroke:var(--muted);stroke-width:2;stroke-linecap:round}
.search input{width:100%;font:inherit;font-size:17px;color:var(--ink);background:var(--card);border:1px solid var(--line);border-radius:999px;padding:16px 20px 16px 50px;box-shadow:0 10px 30px rgba(25,18,55,.08)}
.search input:focus{outline:2px solid var(--accent)}
.results{max-width:620px;margin:10px auto 0;text-align:left;background:var(--card);border:1px solid var(--line);border-radius:18px;overflow:hidden}
.results ul{list-style:none;margin:0;padding:6px}
.results a{display:flex;flex-direction:column;padding:10px 14px;border-radius:12px;text-decoration:none;color:var(--ink)}
.results a:hover,.results a:focus-visible{background:var(--accent-soft)}
.results span{color:var(--muted);font-size:14px}
.results .none{margin:0;padding:16px;color:var(--soft)}

.wrap{max-width:1120px;margin:0 auto;padding:28px 16px 48px;display:flex;flex-direction:column;gap:36px}
.wrap.narrow{max-width:780px}
.sec{font-size:22px;margin-bottom:14px}
.popular{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.pop{display:flex;flex-direction:column;gap:4px;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:16px 18px;text-decoration:none;color:var(--ink)}
.pop:hover{border-color:var(--accent)}
.pop span{color:var(--muted);font-size:14px;line-height:1.5}
.cats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.cat{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:20px}
.cat h3{font-size:18px}
.cat p{color:var(--muted);font-size:14px;margin:4px 0 10px}
.cat ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}
.cat a{text-decoration:none;font-size:15px}.cat a:hover{text-decoration:underline}
@media (max-width:900px){.popular,.cats{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:560px){.popular,.cats{grid-template-columns:minmax(0,1fr)}}

.doc{flex-direction:row;align-items:flex-start;gap:40px}
.side{flex:0 0 240px;position:sticky;top:76px;font-size:14px}
.side-h{font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;font-size:12px;margin:0 0 8px}
.side ul{list-style:none;margin:0 0 22px;padding:0;display:flex;flex-direction:column;gap:2px}
.side a{display:block;padding:6px 10px;border-radius:10px;color:var(--soft);text-decoration:none}
.side a:hover{background:var(--accent-soft)}
.side a.on{background:var(--accent-soft);color:var(--accent);font-weight:600}
@media (max-width:860px){.doc{flex-direction:column}.side{position:static;flex:none;width:100%;order:2}}
.body{flex:1;min-width:0;max-width:720px}
.crumbs{font-size:14px;color:var(--muted);margin-bottom:12px}
.crumbs a{color:var(--muted)}
.body h1{font-size:clamp(28px,4vw,38px);line-height:1.15}
.lead{font-size:18px;color:var(--soft);margin:10px 0 24px}
.prose h2{font-size:21px;margin:28px 0 8px}
.prose p,.prose li{color:var(--soft)}
.prose b{color:var(--ink)}
.prose ul,.prose ol{padding-left:22px}
.prose li{margin:6px 0}
.prose table{width:100%;border-collapse:collapse;margin:16px 0;font-size:15px;display:block;overflow-x:auto}
.prose th,.prose td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
.prose th{font-size:13px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}
.pn{display:flex;justify-content:space-between;gap:12px;margin-top:36px}
.pn a{flex:1;max-width:48%;display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:12px 16px;text-decoration:none;font-weight:600}
.pn a:hover{border-color:var(--accent)}
.pn small{color:var(--muted);font-weight:400}
.pn .next{text-align:right;margin-left:auto}
.faq details{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:4px 18px;margin:10px 0}
.faq summary{cursor:pointer;font-weight:600;padding:12px 0}
.faq p{margin:0 0 14px;color:var(--soft)}
.help{display:flex;flex-direction:column;gap:4px;margin-top:36px;background:var(--accent-soft);border-radius:16px;padding:18px 20px;font-size:15px}
.help.wide{margin-top:0}
.help .sos{color:var(--soft)}.help .sos a{color:var(--sos);font-weight:600}
.foot{border-top:1px solid var(--line);text-align:center;color:var(--muted);font-size:14px;padding:24px 16px}
.foot p{margin:4px 0}.foot a{color:var(--soft)}