/* Qrifo shared UI v1: one blue design for header, nav, footer, back navigation and quick actions */
:root{--qf-blue:#2f5bff;--qf-blue-d:#1f43d6;--qf-blue-dd:#1a37b3;--qf-ring:rgba(47,91,255,.30)}
.qf-top{max-width:1100px;margin:0 auto;padding:18px 16px 0}
.qf-header{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:nowrap;margin:0 0 12px;padding:0;background:none;border:0}
.qf-brand{display:flex;align-items:baseline;gap:12px;min-width:0}
.qf-logo{font:800 30px/1 "Bricolage Grotesque",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;letter-spacing:-.03em;color:var(--ink,#0f1b33);text-decoration:none}
.qf-logo b{color:var(--qf-blue)}
.qf-tag{display:none;font-size:14px;color:var(--mute,var(--muted,#5a6785))}
@media(min-width:900px){.qf-tag{display:inline}}
.qf-scan{display:inline-flex;align-items:center;gap:10px;min-height:46px;padding:0 20px;border-radius:12px;background:linear-gradient(135deg,var(--qf-blue),var(--qf-blue-d));color:#fff;font:700 16px/1 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;text-decoration:none;white-space:nowrap;box-shadow:0 6px 18px rgba(47,91,255,.35)}
.qf-scan svg{width:22px;height:22px;flex:none}
.qf-scan:hover{filter:brightness(1.08)}
.qf-scan[aria-current=page]{box-shadow:0 0 0 3px var(--card,#fff),0 0 0 6px var(--qf-blue)}
.qf-nav{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 14px;padding:0}
.qf-nav a{display:inline-flex;align-items:center;min-height:38px;padding:0 15px;border-radius:10px;background:var(--qf-blue);border:2px solid var(--qf-blue);color:#fff;font:600 14px/1 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;text-decoration:none;white-space:nowrap}
.qf-nav a:hover{background:var(--qf-blue-d);border-color:var(--qf-blue-d)}
.qf-nav a[aria-current=page]{background:var(--qf-blue-dd);border-color:var(--qf-blue-dd);box-shadow:0 0 0 3px var(--qf-ring)}
.qf-nav a:focus-visible,.qf-scan:focus-visible,.qf-back:focus-visible,.qf-footer a:focus-visible,.qf-dock a:focus-visible,.qf-up:focus-visible{outline:3px solid #9db1ff;outline-offset:2px}
.qf-bar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:0 0 14px}
.qf-back{display:inline-flex;align-items:center;gap:6px;min-height:38px;padding:0 14px;border-radius:10px;background:var(--card,#fff);color:var(--qf-blue);border:2px solid var(--qf-blue);font:700 14px/1 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;text-decoration:none;cursor:pointer}
.qf-back:hover{background:var(--qf-blue);color:#fff}
.qf-crumb ol{display:flex;flex-wrap:wrap;gap:4px 8px;list-style:none;margin:0;padding:0;font-size:14px;color:var(--mute,var(--muted,#5a6785))}
.qf-crumb li+li:before{content:"\203A";margin-right:8px;opacity:.6}
.qf-crumb a{color:var(--qf-blue);text-decoration:none}
.qf-crumb a:hover{text-decoration:underline}
.qf-crumb [aria-current]{color:var(--ink,#0f1b33);font-weight:600}
.qf-top+.wrap{padding-top:8px}
body:not(.qf-article) .wrap{max-width:1100px}
body.qf-article main{max-width:900px;margin-left:auto;margin-right:auto}
.qf-footer{display:block;max-width:none;margin:28px 0 0;padding:20px 0 0;border-top:1px solid var(--line,#d9dfec);color:var(--mute,var(--muted,#5a6785));font-size:14px}
.qf-fgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:18px 24px}
.qf-fcol strong{display:block;margin-bottom:8px;color:var(--ink,#0f1b33)}
.qf-fcol div{display:flex;flex-wrap:wrap;gap:6px}
.qf-footer a{display:inline-flex;align-items:center;min-height:32px;margin:0;padding:0 11px;border-radius:8px;border:1.5px solid var(--qf-blue);background:transparent;color:var(--qf-blue);font-weight:600;text-decoration:none}
.qf-footer a:hover,.qf-footer a[aria-current=page]{background:var(--qf-blue);color:#fff}
.qf-copy{margin:18px 0 0}
.qf-footwrap{padding-top:0!important;padding-bottom:20px!important}
.qf-dock{display:none}
.qf-up{position:fixed;right:16px;bottom:calc(16px + env(safe-area-inset-bottom,0px));z-index:40;width:46px;height:46px;border:0;border-radius:50%;background:var(--qf-blue);color:#fff;font:700 20px/1 system-ui,sans-serif;cursor:pointer;box-shadow:0 6px 18px rgba(47,91,255,.40);opacity:0;transform:translateY(8px);pointer-events:none;transition:opacity .2s,transform .2s}
.qf-up.on{opacity:1;transform:none;pointer-events:auto}
@media(max-width:720px){
 .qf-header{margin-bottom:10px}
 .qf-logo{font-size:27px}
 .qf-scan{min-height:44px;padding:0 14px;font-size:15px}
 .qf-nav{flex-wrap:nowrap;overflow-x:auto;scroll-snap-type:x proximity;-webkit-overflow-scrolling:touch;scrollbar-width:none;margin-right:-16px;padding-right:16px}
 .qf-nav::-webkit-scrollbar{display:none}
 .qf-nav a{scroll-snap-align:start}
 .qf-dock{position:fixed;left:0;right:0;bottom:0;z-index:50;display:flex;gap:10px;padding:10px 12px calc(10px + env(safe-area-inset-bottom,0px));background:var(--card,#fff);border-top:1px solid var(--line,#d9dfec);box-shadow:0 -6px 20px rgba(15,27,51,.10)}
 .qf-dock a{flex:1;display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:46px;padding:0 8px;border-radius:12px;border:2px solid var(--qf-blue);background:transparent;color:var(--qf-blue);white-space:nowrap;font:700 14px/1 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;text-decoration:none}
 .qf-dock a svg{width:20px;height:20px;flex:none}
 .qf-dock a.qf-dock-main{flex:1.5;background:var(--qf-blue);color:#fff}
 .qf-dock a[aria-current=page]{box-shadow:0 0 0 3px var(--qf-ring)}
 body{padding-bottom:calc(76px + env(safe-area-inset-bottom,0px))}
 #toast{bottom:calc(90px + env(safe-area-inset-bottom,0px))!important}
 .totop,.qf-up{bottom:calc(90px + env(safe-area-inset-bottom,0px))!important}
}
@media(prefers-color-scheme:dark){
 body[data-qf-dark] .qf-back,body[data-qf-dark] .qf-footer a,body[data-qf-dark] .qf-dock a:not(.qf-dock-main),body[data-qf-dark] .qf-crumb a{color:#9db1ff;border-color:#5b74e6}
 body[data-qf-dark] .qf-crumb a{border:0}
 body[data-qf-dark] .qf-back:hover,body[data-qf-dark] .qf-footer a:hover,body[data-qf-dark] .qf-footer a[aria-current=page]{background:var(--qf-blue);color:#fff;border-color:var(--qf-blue)}
}
@media(prefers-reduced-motion:reduce){.qf-up{transition:none}}

/* AI button (homepage) */
.qf-ai-box{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin:18px 0 0;padding:14px;border:1px solid var(--line,#d9dfec);border-radius:12px;background:var(--soft,#e8edff)}
.qf-ai-box a.qf-ai{display:inline-flex;align-items:center;gap:8px;min-height:46px;padding:0 20px;border-radius:12px;background:var(--qf-blue);color:#fff;font:700 16px/1 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;text-decoration:none;white-space:nowrap;box-shadow:0 6px 18px rgba(47,91,255,.30)}
.qf-ai-box a.qf-ai:hover{background:var(--qf-blue-d)}
.qf-ai-box a.qf-ai:focus-visible{outline:3px solid #9db1ff;outline-offset:2px}
.qf-ai-box p{margin:0;flex:1 1 240px;font-size:15px;color:var(--mute,#5a6785)}