:root{
  --paper:#F4F5F8;--paper-2:#E6E9F0;--ink:#121212;--ink-3:#3A3A3A;--orange:#0B3FD6;--orange-deep:#0932A8;--sun:#D9E3FF;
  --muted:#6B6B6B;--muted-dark:#8A8A8A;--mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;--bw:2px;--shadow:6px 6px 0 var(--ink);--shadow-sm:4px 4px 0 var(--ink);
  --r:0;--r-sm:0;--navy:#121212;--navy-2:#fff;--magenta:#0B3FD6;--magenta-deep:#0932A8;--grad:#0B3FD6;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{margin:0;background:var(--paper);color:var(--ink);font-family:"Archivo",system-ui,-apple-system,sans-serif;font-size:14px;line-height:1.5;min-height:100%;font-weight:500;text-transform:uppercase;letter-spacing:.02em}
h1,h2,h3,h4{font-family:"Archivo",system-ui,sans-serif;font-weight:900;letter-spacing:-.01em;line-height:1;margin:0;color:var(--ink);font-stretch:condensed}
a{color:inherit}
button{text-transform:uppercase;letter-spacing:.08em;font-family:inherit}
input,select,textarea,code,pre,.mono,.q,.snippet{text-transform:none;letter-spacing:0}
svg.i{width:1em;height:1em;flex:none;stroke:currentColor;fill:none;stroke-width:2.2;stroke-linecap:square;stroke-linejoin:miter}
.btn{white-space:nowrap;display:inline-flex;align-items:center;justify-content:center;gap:8px;font-family:"Archivo",sans-serif;font-weight:800;font-size:12px;letter-spacing:.08em;background:var(--ink);color:#fff;text-decoration:none;padding:12px 18px;border:var(--bw) solid var(--ink);border-radius:0;cursor:pointer;line-height:1;box-shadow:var(--shadow-sm);transition:transform .08s,box-shadow .08s;text-transform:uppercase}
.btn:hover{transform:translate(2px,2px);box-shadow:2px 2px 0 var(--ink)}
.btn-grad{background:var(--orange);color:#fff}
.btn-ghost{background:var(--paper);color:var(--ink)}
.btn-light{background:#fff;color:var(--ink)}
.btn[disabled]{opacity:.6;cursor:default}
:is(a,button,input,select):focus-visible{outline:3px solid var(--orange);outline-offset:2px}
.logo{display:flex;align-items:center;gap:10px;font-family:"Archivo",sans-serif;font-weight:900;font-size:19px;text-decoration:none;color:var(--ink);font-stretch:condensed}
.logo .mk{width:30px;height:30px;background:var(--orange);border:var(--bw) solid var(--ink);display:grid;place-items:center;flex:none;color:#fff;font-size:15px}
.logo em{font-style:normal;color:var(--orange)}
.wrap{max-width:1200px;margin:0 auto;padding:0 20px}
.top{position:sticky;top:0;z-index:20;background:var(--paper);border-bottom:var(--bw) solid var(--ink)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;height:64px}
.top .right{display:flex;gap:10px;align-items:center;font-size:12px;color:var(--muted);letter-spacing:.06em}
.top .right #who{text-transform:none;letter-spacing:0}
.top select{background:#fff;color:var(--ink);border:var(--bw) solid var(--ink);padding:8px 12px;font-family:inherit;font-size:12px;font-weight:800;text-transform:uppercase}
.banner{background:var(--sun);color:var(--ink);font-size:12px;font-weight:800;padding:10px 0;border-bottom:var(--bw) solid var(--ink);letter-spacing:.06em}
.banner .wrap{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.banner a{font-weight:900}
main{padding:28px 0 60px}
.head{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;flex-wrap:wrap;margin-bottom:18px}
.head h1{font-size:clamp(2rem,4vw,3rem)}
.head p{margin:6px 0 0;color:var(--muted);font-size:12px;letter-spacing:.06em}
.tabs{display:flex;gap:6px;flex-wrap:wrap}
.tabs button{background:#fff;border:var(--bw) solid var(--ink);color:var(--ink);font-family:"Archivo",sans-serif;font-weight:800;font-size:11px;letter-spacing:.1em;text-transform:uppercase;padding:8px 12px;cursor:pointer}
.tabs button[aria-selected="true"]{background:var(--ink);color:#fff}
.tabs.small button{font-size:10.5px;padding:6px 10px}
.tabs.small button[aria-selected="true"]{background:var(--orange);color:#fff}
.bar{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;margin:6px 0 16px}
.tiles{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--bw);background:var(--ink);border:var(--bw) solid var(--ink)}
@media(max-width:900px){.tiles{grid-template-columns:repeat(2,1fr)}}
.tile{background:#fff;padding:16px 18px}
.tile .lbl{font-size:11px;font-weight:800;letter-spacing:.1em;color:var(--muted);display:flex;gap:6px;align-items:center}
.tile .val{font-weight:900;font-size:2.4rem;letter-spacing:-.03em;color:var(--ink);margin-top:6px;line-height:1;font-stretch:condensed}
.tile .val small{font-size:.5em;font-weight:800;color:var(--muted);letter-spacing:0;margin-left:4px}
.tile .delta{font-size:11px;color:var(--orange-deep);margin-top:6px;display:flex;gap:6px;align-items:center;font-weight:800;letter-spacing:.06em}
.tile .delta.flat{color:var(--muted)}
.grid2{display:grid;grid-template-columns:2fr 1fr;gap:var(--bw);margin-top:var(--bw);background:var(--ink);border:var(--bw) solid var(--ink)}
@media(max-width:900px){.grid2{grid-template-columns:1fr}}
.card{background:#fff;padding:16px 18px}
.card h4{font-size:12px;display:flex;gap:8px;align-items:center;margin-bottom:8px;letter-spacing:.1em}
.card h4 span{font-weight:700;color:var(--muted);font-size:11px;margin-left:auto}
.chart{width:100%;height:auto;display:block;overflow:visible}
.chart .grid{stroke:#D8D2C6;stroke-width:1}
.chart .axis{fill:var(--muted);font-size:11px}
.chart .line{fill:none;stroke:var(--orange);stroke-width:3;stroke-linejoin:miter;stroke-linecap:square}
.chart .area{fill:var(--orange);opacity:.14}
.chart .dot{fill:#fff;stroke:var(--orange);stroke-width:2.5}
.chart .dot.end{fill:var(--ink);stroke:var(--ink)}
.chart .hit{fill:transparent;cursor:crosshair}
.chart .xh{stroke:var(--ink);stroke-width:1;stroke-dasharray:3 3}
.chart .bar{fill:#D8D2C6}
.chart .bar.ai{fill:var(--orange)}
.chartwrap{position:relative}
.tip{position:absolute;pointer-events:none;background:var(--ink);color:#fff;font-size:11px;padding:7px 10px;transform:translate(-50%,-115%);white-space:nowrap;opacity:0;transition:opacity .12s;font-weight:800;letter-spacing:.06em}
.tip b{font-size:13px;font-weight:900;color:#9DB4FF}
.comp{list-style:none;margin:0;padding:0}
.comp li{display:grid;grid-template-columns:1fr auto;gap:10px;align-items:center;padding:8px 0;border-top:1px solid var(--ink);font-size:12px;font-weight:800;letter-spacing:.04em}
.comp li:first-child{border-top:none}
.comp .track{grid-column:1/-1;height:8px;background:var(--paper-2);overflow:hidden;margin-top:-2px;border:1px solid var(--ink)}
.comp .fill{height:100%;background:var(--ink)}
.comp li.me .fill{background:var(--orange)}
.comp li.me b{color:var(--orange-deep)}
.ptable{margin-top:var(--bw);background:#fff;border:var(--bw) solid var(--ink);overflow:auto}
.ptable table{width:100%;border-collapse:collapse;font-size:13px;min-width:680px}
.ptable th{text-align:left;font-size:11px;font-weight:800;letter-spacing:.1em;color:var(--muted);padding:12px 14px;border-bottom:var(--bw) solid var(--ink);white-space:nowrap}
.ptable th.c,.ptable td.c{text-align:center}
.ptable td{padding:11px 14px;border-bottom:1px solid #D8D2C6;vertical-align:middle}
.ptable tbody tr{cursor:pointer}
.ptable tbody tr:hover td{background:var(--paper)}
.ptable td.q{font-family:var(--mono);font-size:12.5px;color:var(--ink);text-transform:none;letter-spacing:0}
.ptable td.q small{display:block;font-family:"Archivo",sans-serif;color:var(--muted);font-size:10.5px;margin-top:2px;text-transform:uppercase;letter-spacing:.08em;font-weight:800}
.st{display:inline-flex;align-items:center;justify-content:center;gap:5px;font-size:10.5px;font-weight:800;padding:4px 8px;min-width:64px;letter-spacing:.1em;text-transform:uppercase;border:1px solid var(--ink)}
.st.first{background:var(--orange);color:#fff}
.st.named{background:var(--sun);color:var(--ink)}
.st.cited{background:#fff;color:var(--ink)}
.st.absent{background:transparent;color:var(--muted);border-color:#BBB}
.st.err{background:var(--ink);color:#fff}
.st.na{color:var(--muted);border-color:transparent}
.legend{display:flex;gap:14px;flex-wrap:wrap;margin-top:12px;font-size:11px;color:var(--muted);letter-spacing:.06em;font-weight:800}
.legend span{display:inline-flex;gap:6px;align-items:center}
.foot{margin-top:18px;font-size:11px;color:var(--muted);display:flex;gap:8px;align-items:center;flex-wrap:wrap;letter-spacing:.06em}
.empty{padding:40px 20px;text-align:center;color:var(--ink-3);background:#fff;border:var(--bw) solid var(--ink);box-shadow:var(--shadow)}
.empty h3{font-size:22px;margin-bottom:8px}
/* drawer */
.drawer{position:fixed;inset:0 0 0 auto;width:min(720px,100%);background:var(--paper);border-left:var(--bw) solid var(--ink);z-index:40;transform:translateX(100%);transition:transform .2s ease;display:flex;flex-direction:column}
.drawer.open{transform:none}
.drawer header{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;padding:18px 20px;border-bottom:var(--bw) solid var(--ink);background:#fff}
.drawer header h3{font-size:18px}
.drawer header .q{font-family:var(--mono);font-size:12.5px;color:var(--orange-deep);margin-top:4px}
.drawer .x{background:var(--ink);border:var(--bw) solid var(--ink);color:#fff;width:34px;height:34px;cursor:pointer;font-size:18px;flex:none}
.drawer .body{overflow:auto;padding:16px 20px 30px;display:grid;gap:14px}
.ans{background:#fff;border:var(--bw) solid var(--ink);padding:14px 16px;text-transform:none;letter-spacing:0}
.ans .h{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:8px}
.ans .h b{font-size:13px;color:var(--ink);text-transform:uppercase;letter-spacing:.1em;font-weight:900}
.ans pre{white-space:pre-wrap;font-family:inherit;font-size:14px;color:var(--ink);margin:0;line-height:1.6}
.ans mark{background:var(--sun);color:var(--ink);padding:0 3px}
.ans .cites{margin-top:10px;font-size:12px;color:var(--muted);display:flex;flex-wrap:wrap;gap:6px}
.ans .cites a{color:var(--ink);text-decoration:none;border:1px solid var(--ink);padding:3px 9px;max-width:260px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ans .cites a.me{background:var(--sun)}
.scrim{position:fixed;inset:0;background:rgba(0,0,0,.35);z-index:35;opacity:0;pointer-events:none;transition:opacity .2s}
.scrim.show{opacity:1;pointer-events:auto}
/* login */
.login{min-height:100vh;display:grid;place-items:center;padding:24px;background:var(--orange)}
.login-card{position:relative;width:100%;max-width:460px;background:#fff;border:var(--bw) solid var(--ink);padding:30px;box-shadow:8px 8px 0 var(--ink)}
.login-card h1{font-size:34px;margin:22px 0 8px}
.login-card p{color:var(--ink-3);margin:0 0 18px;font-size:13px}
.login-card label{display:block;font-size:11px;font-weight:800;color:var(--ink);margin-bottom:6px;letter-spacing:.1em}
.login-card input{width:100%;padding:12px 14px;border:var(--bw) solid var(--ink);background:var(--paper);color:var(--ink);font-family:inherit;font-size:16px;margin-bottom:12px;border-radius:0}
.login-card input:focus{background:#fff;outline:3px solid var(--orange);outline-offset:0}
.login-card .btn{width:100%}
.msg{margin-top:14px;font-size:12px;color:var(--ink);min-height:1.4em;font-weight:800;letter-spacing:.04em}
.msg.err{color:var(--orange-deep)}
.login-foot{margin-top:22px;padding-top:16px;border-top:var(--bw) solid var(--ink);font-size:11px;color:var(--muted);display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;letter-spacing:.06em;font-weight:800}
.login-foot a{color:var(--ink);text-decoration:none}
.spin{display:inline-block;width:14px;height:14px;border:2px solid rgba(0,0,0,.25);border-top-color:currentColor;border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* verify row */
.verify{display:flex;flex-wrap:wrap;gap:6px;align-items:center;margin:0 0 12px;font-family:"Archivo",sans-serif}
.verify .vlbl{font-size:10.5px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-right:4px}
.vbtn{display:inline-flex;align-items:center;gap:6px;font-family:"Archivo",sans-serif;font-weight:800;font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;background:#fff;color:var(--ink);border:2px solid var(--ink);padding:5px 9px;text-decoration:none;cursor:pointer;line-height:1}
.vbtn:hover{background:var(--ink);color:#fff}
.vbtn.copy{background:var(--paper)}
.stamp{font-family:"Archivo",sans-serif;font-weight:500;font-size:10px;letter-spacing:.04em;color:var(--muted);text-transform:none;margin-left:6px}
/* verification additions */
.ans-group{display:grid;gap:8px}
.ans-head{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-top:6px}
.ans-head b{font-size:13px;font-weight:900;letter-spacing:.1em}
.ans .h b .stamp{margin-left:0;font-weight:600}
.recheck{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin:0 0 12px;font-size:11px;color:var(--muted);letter-spacing:.04em}
.spot{display:flex;gap:6px;align-items:center;flex-wrap:wrap;background:var(--paper);border:var(--bw) solid var(--ink);padding:10px 12px;font-size:11px;font-weight:800;letter-spacing:.06em}
.spot span{margin-right:6px}
.vscore{display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:center;font-size:12.5px;text-transform:none;letter-spacing:0;font-weight:500}
.vscore .val{font-weight:900;font-size:2.6rem;letter-spacing:-.03em;line-height:1;font-stretch:condensed;color:var(--orange)}
.vscore .val small{font-size:.45em;color:var(--muted);margin-left:2px}
.vlist{list-style:none;margin:12px 0 0;padding:0;display:grid;gap:8px}
.vlist li{display:grid;grid-template-columns:auto 1fr;gap:8px 10px;align-items:center;border-top:1px solid #D8D2C6;padding-top:8px}
.vlist li .q{font-family:var(--mono);font-size:12px;text-transform:none;letter-spacing:0}
.vlist li small{grid-column:2;font-size:10.5px;color:var(--muted);letter-spacing:.06em;font-weight:800}
.vempty{margin:0;font-size:12.5px;color:var(--ink-3);text-transform:none;letter-spacing:0;font-weight:500;line-height:1.5}
.how{list-style:none;margin:0;padding:0;display:grid;gap:8px;font-size:12.5px;text-transform:none;letter-spacing:0;font-weight:500;line-height:1.45}
.how li{padding-left:14px;position:relative}
.how li::before{content:"";position:absolute;left:0;top:.5em;width:6px;height:6px;background:var(--orange)}
.how-btns{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
/* live re-check inside the drawer reuses the free-check renderer */
.cres-mini{background:#fff;border:var(--bw) solid var(--ink);margin:0 0 14px}
.cres-mini .cres-empty{padding:18px;font-size:12px;color:var(--muted);text-align:center}
.cres-mini .cres-head{padding:12px 14px;border-bottom:var(--bw) solid var(--ink);display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}
.cres-mini .cres-head b{font-size:13px;font-weight:900}
.cres-mini .cres-head span{font-size:10.5px;color:var(--muted);letter-spacing:.06em;font-weight:800}
.cres-mini .ctiles{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--bw);background:var(--ink);border-bottom:var(--bw) solid var(--ink)}
.cres-mini .ctile{background:#fff;padding:10px 12px}
.cres-mini .ctile .lbl{font-size:10px;font-weight:800;letter-spacing:.1em;color:var(--muted)}
.cres-mini .ctile .val{font-weight:900;font-size:1.5rem;line-height:1;font-stretch:condensed}
.cres-mini .ctile .val small{font-size:.5em;color:var(--muted);margin-left:3px}
.cres-mini .cchat{padding:12px 14px;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;text-transform:none;letter-spacing:0;font-weight:400;font-size:13px;line-height:1.5}
.cres-mini .cchat .q{display:none}
.cres-mini .cchat .verify{display:none}
.cres-mini .cans{display:grid;grid-template-columns:22px 1fr;gap:8px;margin-bottom:10px;align-items:start}
.cres-mini .cans .av{width:22px;height:22px;border-radius:50%;background:var(--ink);color:#fff;display:grid;place-items:center;font-size:11px}
.cres-mini .cans .eng{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-bottom:4px}
.cres-mini .cans .eng b{font-family:"Archivo",sans-serif;font-weight:900;font-size:10.5px;letter-spacing:.1em;text-transform:uppercase}
.cres-mini .cans pre{white-space:pre-wrap;font-family:inherit;margin:0;color:#222;max-height:180px;overflow:auto}
.cres-mini .cans mark{background:var(--sun);padding:0 3px}
.cres-mini .cans .cites{margin-top:6px;display:flex;flex-wrap:wrap;gap:5px;font-size:10.5px}
.cres-mini .cans .cites a{color:var(--ink);text-decoration:none;border:1px solid var(--ink);padding:2px 6px;max-width:180px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.cres-mini .cans .cites a.me{background:var(--sun)}
.cres-mini .cans .wait{color:var(--muted);display:inline-flex;gap:8px;align-items:center}
.cres-mini .cans .others{font-size:11px;color:var(--muted);margin-top:4px}
.cres-mini .cverdict{display:inline-flex;align-items:center;gap:5px;font-family:"Archivo",sans-serif;font-size:10px;font-weight:800;padding:3px 7px;letter-spacing:.1em;text-transform:uppercase;border:1px solid var(--ink)}
.cres-mini .cverdict.first{background:var(--orange);color:#fff}
.cres-mini .cverdict.named{background:var(--sun)}
.cres-mini .cverdict.cited{background:#fff}
.cres-mini .cverdict.absent{color:var(--muted);border-color:#bbb}
.cres-mini .cverdict.err{background:var(--ink);color:#fff}
.cres-mini .cres-cta{display:none}

/* logo mark spin (client pages) */
@keyframes mkspin{0%{transform:rotate(0)}100%{transform:rotate(360deg)}}
@keyframes mkspinin{0%{transform:rotate(-1440deg) scale(.55)}80%{transform:rotate(14deg) scale(1.08)}100%{transform:rotate(0) scale(1)}}
@keyframes mkidle{0%{transform:rotate(0)}100%{transform:rotate(360deg)}}
@keyframes mkidle2{0%{transform:rotate(0)}60%{transform:rotate(760deg)}100%{transform:rotate(720deg)}}
.logo .mk.arrive{animation:mkspinin 3s cubic-bezier(.12,.75,.2,1) both}
.logo .mk.idle{animation:mkidle 1s cubic-bezier(.4,0,.2,1) both}
.logo .mk.idle2{animation:mkidle2 1.6s cubic-bezier(.4,0,.2,1) both}
.logo .mk.working{animation:mkspin .9s linear infinite}
@media (prefers-reduced-motion:reduce){.logo .mk.arrive,.logo .mk.idle,.logo .mk.idle2,.logo .mk.working{animation:none}}

/* ---------- share of answer meter ---------- */
.ringbox{padding:26px 22px;border-bottom:var(--bw) solid var(--ink);background:#fff}
.ringwrap{display:grid;grid-template-columns:auto 1fr;gap:30px;align-items:center}
.ring{position:relative;width:190px;height:190px;flex:none}
.ring svg{width:100%;height:100%;transform:rotate(-90deg)}
.ring circle{fill:none;stroke-width:15}
.ring .ring-track{stroke:var(--sun)}
.ring .ring-fill{stroke:var(--orange);transition:stroke-dashoffset 1.1s cubic-bezier(.2,.8,.2,1)}
.ringmid{position:absolute;inset:0;display:grid;place-content:center;text-align:center;gap:2px}
.ringmid b{font-size:56px;font-weight:900;letter-spacing:-.04em;line-height:1;font-stretch:condensed;color:var(--ink)}
.ringmid b i{font-style:normal;font-size:.42em;color:var(--muted);margin-left:1px}
.ringmid span{font-size:9.5px;font-weight:800;letter-spacing:.14em;color:var(--muted)}
.engtiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(0,1fr));gap:12px}
.engtile{border:var(--bw) solid var(--ink);box-shadow:4px 4px 0 var(--ink);padding:14px;background:#fff;display:grid;gap:7px;align-content:start}
.et-top{display:flex;align-items:center;gap:8px;font-size:11px;font-weight:800;letter-spacing:.08em}
.et-top img{width:20px;height:20px;object-fit:contain;flex:none}
.engtile b{font-size:30px;font-weight:900;letter-spacing:-.03em;line-height:1;font-stretch:condensed}
.engtile b i{font-style:normal;font-size:.45em;color:var(--muted);margin-left:1px}
.meter{height:9px;background:var(--sun);border:2px solid var(--ink)}
.meter i{display:block;height:100%;background:var(--orange);width:0;transition:width .9s cubic-bezier(.2,.8,.2,1)}
.engtile small{font-size:10px;font-weight:800;letter-spacing:.06em;color:var(--muted)}
.ringfoot{margin-top:16px;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;text-transform:none;letter-spacing:0;font-weight:500;font-size:12.5px;color:var(--ink-3);line-height:1.5}
.ringwrap.on-dark .ring .ring-track{stroke:#2E2E2E}
.ringwrap.on-dark .ringmid b{color:#fff}
.ringwrap.on-dark .ringmid span,.ringwrap.on-dark .engtile small,.ringwrap.on-dark .engtile b i{color:#9AA3B5}
.ringwrap.on-dark .engtile{background:var(--ink);color:#fff;border-color:#fff;box-shadow:4px 4px 0 #fff}
.ringwrap.on-dark .meter{background:#2A2A2A;border-color:#fff}
@media(max-width:820px){.ringwrap{grid-template-columns:1fr;justify-items:center;gap:22px}.engtiles{width:100%;grid-template-columns:repeat(2,minmax(0,1fr))}.ring{width:164px;height:164px}.ringmid b{font-size:46px}}
@media (prefers-reduced-motion:reduce){.ring .ring-fill,.meter i{transition:none}}