:root{
  color-scheme: dark;
  --void:#060911; --deep:#0A0F1F; --panel:#0F1529; --panel2:#141B34; --raise:#1A2242;
  --field:#0A1022; --line:#222C52; --line2:#34427C;
  --text:#E7EBF9; --soft:#BBC4E4; --muted:#8B96C2; --dim:#5F6A96;
  --ion:#7DB3FF; --ion2:#B2D0FF; --ionglow:rgba(125,179,255,.28); --ionwash:rgba(125,179,255,.08);
  --flux:#FFB35E; --fluxwash:rgba(255,179,94,.10);
  --ok:#5CE0AF; --err:#FF7D90;
  --display:"Chakra Petch", "Bahnschrift", "Segoe UI", system-ui, sans-serif;
  --ui:"IBM Plex Sans", "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono:"IBM Plex Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;
  --doc:"Newsreader", "Iowan Old Style", Georgia, "Times New Roman", serif;
}
*{box-sizing:border-box}
html{background:var(--void)}
body{margin:0;background:var(--void);color:var(--text);font:14px/1.5 var(--ui);min-height:100vh;
  background-image:
    radial-gradient(1200px 600px at 85% -10%, rgba(125,179,255,.10), transparent 60%),
    radial-gradient(900px 500px at -10% 20%, rgba(150,110,255,.07), transparent 60%);
  background-attachment:fixed}
body::before{content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:linear-gradient(rgba(125,179,255,.045) 1px, transparent 1px),linear-gradient(90deg, rgba(125,179,255,.045) 1px, transparent 1px);
  background-size:44px 44px;mask-image:linear-gradient(180deg,#000 0,rgba(0,0,0,.35) 60%,transparent 100%)}
a{color:var(--ion2)}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--ion);outline-offset:2px}

/* ---------- top bar ---------- */
.bar{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:rgba(6,9,17,.82);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.bar-in{max-width:1560px;margin:0 auto;padding-inline:20px;display:flex;align-items:center;gap:22px;min-height:62px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none;color:var(--text)}
.brand svg{flex:none}
.brand b{font:700 19px/1 var(--display);letter-spacing:.14em}
.brand small{display:block;font:500 10.5px/1.2 var(--mono);color:var(--muted);letter-spacing:.14em;margin-top:4px}
.tabs{display:flex;gap:4px;flex-wrap:wrap}
.tab{background:none;border:0;padding:9px 12px 10px;font:600 12.5px/1 var(--display);letter-spacing:.12em;text-transform:uppercase;color:var(--muted);cursor:pointer;position:relative;border-radius:4px}
.tab:hover{color:var(--soft);background:var(--ionwash)}
.tab[aria-selected="true"]{color:var(--text)}
.tab[aria-selected="true"]::after{content:"";position:absolute;left:12px;right:12px;bottom:3px;height:2px;background:var(--ion);box-shadow:0 0 12px var(--ion)}
.tab .ct{font:500 10px/1 var(--mono);color:var(--ion);margin-left:6px;letter-spacing:0}
.status{margin-left:auto;display:flex;align-items:center;gap:10px;font:500 11px/1.2 var(--mono);color:var(--muted);letter-spacing:.08em}
.led{width:8px;height:8px;border-radius:50%;background:var(--ok);box-shadow:0 0 10px var(--ok)}
@media (max-width:900px){.status{display:none}}

/* ---------- layout ---------- */
.app{position:relative;z-index:1;max-width:1560px;margin:0 auto;padding-inline:20px;padding-block:18px 64px}
@media (max-width:520px){.app,.bar-in{padding-inline:16px}}
[hidden],.view[hidden]{display:none!important}
.gen{display:grid;grid-template-columns:268px minmax(0,1fr) minmax(0,1.08fr);gap:16px;align-items:start}
@media (max-width:1200px){.gen{grid-template-columns:minmax(0,1fr) minmax(0,1fr)} .nav{grid-column:1/-1}}
@media (max-width:780px){.gen{grid-template-columns:minmax(0,1fr)}}

.panel{position:relative;background:linear-gradient(180deg,rgba(20,27,52,.92),rgba(15,21,41,.92));border:1px solid var(--line);border-radius:6px}
.panel::before,.panel::after{content:"";position:absolute;width:12px;height:12px;pointer-events:none;border-color:var(--ion);opacity:.75}
.panel::before{top:-1px;left:-1px;border-top:2px solid;border-left:2px solid;border-top-left-radius:6px}
.panel::after{bottom:-1px;right:-1px;border-bottom:2px solid;border-right:2px solid;border-bottom-right-radius:6px}
.phead{display:flex;align-items:center;gap:10px;padding:12px 16px;border-bottom:1px solid var(--line)}
.eyebrow{font:500 10.5px/1.2 var(--mono);letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.eyebrow i{font-style:normal;color:var(--ion)}

/* ---------- nav ---------- */
.nav{position:sticky;top:78px;max-height:calc(100vh - 96px);display:flex;flex-direction:column}
@media (max-width:1200px){.nav{position:relative;top:0;max-height:none}}
.nav .search{padding:12px 14px;border-bottom:1px solid var(--line);display:flex;flex-direction:column;gap:8px}
.navlist{overflow:auto;padding:6px 8px 14px;scrollbar-width:thin;scrollbar-color:var(--line2) transparent}
@media (max-width:1200px){.navlist{display:none}}
.navselect{display:none}
@media (max-width:1200px){.navselect{display:block}}
.cat{margin-top:10px}
.cat h3{margin:0;padding:8px 8px 6px;font:600 11px/1.2 var(--display);letter-spacing:.16em;text-transform:uppercase;color:var(--soft);display:flex;justify-content:space-between}
.cat h3 span{font:500 10px/1 var(--mono);color:var(--dim);letter-spacing:.06em}
.ti{display:flex;width:100%;align-items:baseline;justify-content:space-between;gap:8px;text-align:left;background:none;border:1px solid transparent;border-radius:4px;padding:6px 8px;color:var(--muted);cursor:pointer;font-size:13.5px}
.ti:hover{color:var(--text);background:var(--ionwash)}
.ti[aria-current="true"]{color:var(--text);background:rgba(125,179,255,.12);border-color:rgba(125,179,255,.35)}
.ti code{font:500 10.5px/1 var(--mono);color:var(--dim);flex:none}
.ti[aria-current="true"] code{color:var(--ion)}

/* ---------- inputs ---------- */
.inp,select.inp{width:100%;background:var(--field);border:1px solid var(--line);border-radius:4px;padding:8px 10px;font-size:14px;color:var(--text);transition:border-color .15s, box-shadow .15s}
.inp::placeholder{color:#4B557D}
.inp:hover{border-color:var(--line2)}
.inp:focus{outline:none;border-color:var(--ion);box-shadow:0 0 0 3px var(--ionglow)}
select.inp{appearance:none;-webkit-appearance:none;padding-right:30px;background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);background-position:calc(100% - 15px) 55%,calc(100% - 10px) 55%;background-size:5px 5px;background-repeat:no-repeat}
select.inp option{background:#0F1529}
.form{padding:16px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 14px}
@media (max-width:520px){.form{grid-template-columns:minmax(0,1fr)}}
.fld{display:flex;flex-direction:column;gap:5px;min-width:0}
.fld.w2{grid-column:1/-1}
.fld label,.lbl{font:500 11.5px/1.2 var(--mono);letter-spacing:.06em;color:var(--soft)}
.fld label em{font-style:normal;color:var(--flux)}
.help{font-size:12px;line-height:1.4;color:var(--dim)}
.chk{display:flex;align-items:center;gap:9px;font-size:13.5px;color:var(--soft);cursor:pointer;padding:6px 0}
.chk input{accent-color:var(--ion);width:16px;height:16px}
.authors{display:flex;flex-direction:column;gap:8px}
.arow{display:grid;grid-template-columns:auto minmax(0,1fr) minmax(0,1fr) auto;gap:6px;align-items:center}
.arow.body{grid-template-columns:auto minmax(0,2fr) auto}
.kind{font:500 10.5px/1 var(--mono);letter-spacing:.06em;padding:9px 8px;border-radius:4px;border:1px solid var(--line);background:var(--panel2);color:var(--muted);cursor:pointer;min-width:52px}
.kind:hover{color:var(--text);border-color:var(--line2)}
.x{width:32px;height:34px;border-radius:4px;border:1px solid var(--line);background:none;color:var(--dim);cursor:pointer;font-size:16px;line-height:1}
.x:hover{color:var(--err);border-color:var(--err)}
.arm,.x.arm{color:var(--err)!important;border-color:var(--err)!important;background:rgba(255,125,144,.1)!important}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:7px;border:1px solid var(--line2);background:rgba(125,179,255,.05);color:var(--soft);border-radius:4px;padding:7px 12px;font:600 11.5px/1 var(--display);letter-spacing:.1em;text-transform:uppercase;cursor:pointer;white-space:nowrap}
.btn:hover{color:var(--text);border-color:var(--ion);background:var(--ionwash)}
.btn.pri{background:linear-gradient(180deg,#8DBDFF,#6A9FF0);border-color:#8DBDFF;color:#07101F}
.btn.pri:hover{filter:brightness(1.08);color:#07101F}
.btn.sm{padding:5px 9px;font-size:10.5px}
.btn.ghost{background:none;border-color:transparent;color:var(--muted)}
.btn.ghost:hover{border-color:var(--line2);color:var(--text)}
.btn svg{width:13px;height:13px}

/* ---------- form panel head ---------- */
.fhead{padding:16px 16px 14px;border-bottom:1px solid var(--line);display:flex;flex-direction:column;gap:10px}
.fhead-top{display:flex;align-items:flex-start;gap:12px;justify-content:space-between;flex-wrap:wrap}
.fhead h2{margin:4px 0 0;font:600 24px/1.1 var(--display);letter-spacing:.02em;text-wrap:balance}
.rchip{font:500 11px/1 var(--mono);color:var(--ion);border:1px solid rgba(125,179,255,.4);background:var(--ionwash);padding:5px 7px;border-radius:3px;white-space:nowrap}
.tip{margin:0;font-size:13px;color:var(--muted);line-height:1.5;max-width:68ch}
.fbtns{display:flex;gap:6px;flex-wrap:wrap}
.sample{font:500 10.5px/1 var(--mono);letter-spacing:.1em;color:var(--flux);border:1px dashed rgba(255,179,94,.55);background:var(--fluxwash);padding:5px 7px;border-radius:3px}
.ctx{margin:0 16px 16px;border:1px solid var(--line);border-radius:5px;background:rgba(10,16,34,.6)}
.ctx .phead{padding:10px 12px}
.ctx .form{padding:12px}
.opts{display:flex;gap:18px;flex-wrap:wrap;padding:0 16px 16px}

/* ---------- output ---------- */
.outp{position:sticky;top:78px;max-height:calc(100vh - 96px);display:flex;flex-direction:column}
@media (max-width:1200px){.outp{position:relative;top:0;max-height:none}}
.outp .phead{justify-content:space-between}
.scan{position:relative;overflow:hidden}
.scan::after{content:"";position:absolute;left:0;right:0;top:0;height:1px;background:linear-gradient(90deg,transparent,var(--ion),transparent);opacity:.6;animation:scan 5s linear infinite}
@keyframes scan{0%{transform:translateY(0)}100%{transform:translateY(46px)}}
@media (prefers-reduced-motion:reduce){.scan::after{animation:none;display:none}}
.outs{overflow:auto;padding:14px;display:flex;flex-direction:column;gap:12px;scrollbar-width:thin;scrollbar-color:var(--line2) transparent}
.card{border:1px solid var(--line);border-radius:5px;background:rgba(9,14,30,.72)}
.card.hero{border-color:rgba(125,179,255,.45);box-shadow:0 0 0 1px rgba(125,179,255,.08),0 10px 40px -20px rgba(125,179,255,.45)}
.chead{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:9px 12px;border-bottom:1px solid var(--line)}
.chead .eyebrow{color:var(--soft)}
.cbody{padding:12px 14px 14px}
.cite{font:400 17.5px/1.55 var(--doc);color:#F1F3FC;overflow-wrap:anywhere}
.cite i{font-style:italic}
.cite sup{font-size:.68em;line-height:0}
.fn{display:grid;grid-template-columns:auto minmax(0,1fr);gap:12px;align-items:baseline}
.fnno{font:500 12px/1 var(--mono);color:var(--ion);min-width:22px;text-align:right}
.note{margin:8px 0 0;font-size:12.5px;line-height:1.45;color:var(--muted)}
.note b{color:var(--soft);font-weight:600}
.alt{margin-top:10px;padding-top:10px;border-top:1px dashed var(--line);display:flex;flex-direction:column;gap:4px}
.alt .lbl{color:var(--dim)}
.alt .cite{font-size:15.5px;color:var(--soft)}
.miss{color:var(--flux);font-style:normal;border-bottom:1px dashed var(--flux);font-family:var(--mono);font-size:.78em;padding:0 2px}
.intext{display:grid;gap:10px}
.intext .row{display:grid;grid-template-columns:92px minmax(0,1fr);gap:10px;align-items:baseline}
@media (max-width:420px){.intext .row{grid-template-columns:minmax(0,1fr)}}
.diag{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:7px}
.diag li{display:grid;grid-template-columns:18px minmax(0,1fr);gap:8px;font-size:13px;line-height:1.45;color:var(--soft)}
.diag .ic{font:600 11px/1.5 var(--mono);text-align:center}
.diag .fix .ic{color:var(--ok)}
.diag .warn .ic{color:var(--flux)}
.diag .info .ic{color:var(--ion)}
.save-row{display:flex;gap:8px;flex-wrap:wrap;align-items:center;padding:12px 14px;border-top:1px solid var(--line)}
.save-row .help{flex:1 1 180px}

/* ---------- sequencer & bibliography ---------- */
.two{display:grid;grid-template-columns:minmax(0,380px) minmax(0,1fr);gap:16px;align-items:start}
@media (max-width:980px){.two{grid-template-columns:minmax(0,1fr)}}
.intro{padding:16px;display:flex;flex-direction:column;gap:10px}
.intro h2{margin:0;font:600 22px/1.15 var(--display);letter-spacing:.02em}
.intro p{margin:0;color:var(--muted);font-size:13.5px;max-width:70ch}
.stack{padding:16px;display:flex;flex-direction:column;gap:12px}
.fnlist{list-style:none;margin:0;padding:0;display:flex;flex-direction:column}
.fnlist li{display:grid;grid-template-columns:30px minmax(0,1fr) auto;gap:12px;align-items:baseline;padding:12px 16px;border-bottom:1px solid var(--line)}
.fnlist li:last-child{border-bottom:0}
.fnlist .ctl{display:flex;gap:4px;align-self:center}
.mode{display:inline-block;font:500 9.5px/1 var(--mono);letter-spacing:.12em;text-transform:uppercase;padding:3px 5px;border-radius:3px;margin-top:6px;border:1px solid var(--line2);color:var(--muted)}
.mode.full{color:var(--ion);border-color:rgba(125,179,255,.45)}
.mode.ibid{color:var(--ok);border-color:rgba(92,224,175,.45)}
.mode.sub{color:var(--flux);border-color:rgba(255,179,94,.45)}
.empty{padding:28px 16px;color:var(--dim);text-align:center;font-size:13.5px}
.bib{padding:18px 20px 22px;display:flex;flex-direction:column;gap:18px}
.bib h4{margin:0 0 8px;font:600 12px/1.2 var(--display);letter-spacing:.16em;text-transform:uppercase;color:var(--ion)}
.bib .ent{padding-left:28px;text-indent:-28px;margin:0 0 7px}
.libitem{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px;align-items:center;padding:10px 16px;border-bottom:1px solid var(--line)}
.libitem:last-child{border-bottom:0}
.libitem .cite{font-size:15px;color:var(--soft)}
.libitem .t{font:500 10px/1 var(--mono);color:var(--dim);letter-spacing:.08em;text-transform:uppercase;margin-bottom:4px}

/* ---------- primer ---------- */
.primer{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,420px),1fr));gap:16px}
.primer .panel{padding:0}
.primer .body{padding:14px 16px 16px;display:flex;flex-direction:column;gap:10px}
.primer p{margin:0;color:var(--soft);font-size:13.5px;max-width:70ch}
.tbl{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:13px}
th,td{text-align:left;padding:7px 8px;border-bottom:1px solid var(--line);vertical-align:top}
th{font:500 10.5px/1.2 var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
td code,.k{font:500 12.5px/1.3 var(--mono);color:var(--ion2)}
td .cite{font-size:15px}
.flow{display:flex;flex-direction:column;gap:8px}
.step{display:grid;grid-template-columns:24px minmax(0,1fr);gap:10px;align-items:start;font-size:13.5px;color:var(--soft)}
.step span b{color:var(--text);font-weight:600}
.step .num{font:600 11px/22px var(--mono);color:#07101F;background:var(--ion);border-radius:50%;width:22px;height:22px;text-align:center}
footer{max-width:1560px;margin:0 auto;padding:0 20px 40px;color:var(--dim);font-size:12px;position:relative;z-index:1}
footer p{margin:0;max-width:90ch}
.toast{position:fixed;left:50%;bottom:calc(22px + env(safe-area-inset-bottom,0px));transform:translate(-50%,20px);opacity:0;transition:.25s;z-index:50;background:#0F1A33;border:1px solid var(--ion);color:var(--text);padding:10px 16px;border-radius:5px;font:500 12.5px/1.3 var(--mono);letter-spacing:.04em;box-shadow:0 0 30px -8px var(--ion);pointer-events:none;max-width:calc(100vw - 32px)}
.toast.on{opacity:1;transform:translate(-50%,0)}
@media (prefers-reduced-motion:reduce){.toast{transition:none}}

/* ---------- validation & confirm states ---------- */
.fld.invalid .inp{border-color:var(--flux);box-shadow:0 0 0 1px rgba(255,179,94,.35)}
.fld.invalid label{color:var(--flux)}
.err{font-size:12px;line-height:1.4;color:var(--flux)}