/* Oswin AI — site styles. Brand tokens mirror the app's app.css (purple #7B44B0, warm paper neutrals, Outfit wordmark, serif answers). */
@font-face{font-family:"Outfit";src:url("fonts/Outfit.ttf") format("truetype");font-weight:100 900;font-display:swap}
:root{
  --bg:#f7f6f3;--paper:#ffffff;--paper-2:#f0eee9;--side:#f2f1ee;
  --fg:#1f1e1b;--fg2:#57554e;--muted:#8e8b82;--line:#e7e4de;--line2:#d8d4cb;
  --accent:#7b44b0;--accent-hi:#5f2e92;--accent-soft:#f1e9f9;--spiral:#7950f2;--ok:#2a7d5b;--bad:#b4444f;
  --metal:#dcdbd7;--metal2:#bfbdb7;--screen:#1e1c24;
  --brand:"Outfit",ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;
  --ui:"DM Sans",ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;
  --serif:"Source Serif 4","Charter","Iowan Old Style",Georgia,serif;
  --mono:"IBM Plex Mono","SF Mono",Menlo,Consolas,monospace;
  --wrap:1320px;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#1a1917;--paper:#262522;--paper-2:#2e2d29;--side:#171614;--fg:#eceae4;--fg2:#b3b0a7;--muted:#8e8b82;--line:#34322d;--line2:#45423b;
  --accent:#b48ce8;--accent-hi:#d4b8ff;--accent-soft:#2e2640;--spiral:#9a7cff;--ok:#5cc48c;--bad:#e07a84;--metal:#4a4845;--metal2:#302e2b;--screen:#0f0e12;color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#1a1917;--paper:#262522;--paper-2:#2e2d29;--side:#171614;--fg:#eceae4;--fg2:#b3b0a7;--muted:#8e8b82;--line:#34322d;--line2:#45423b;
  --accent:#b48ce8;--accent-hi:#d4b8ff;--accent-soft:#2e2640;--spiral:#9a7cff;--ok:#5cc48c;--bad:#e07a84;--metal:#4a4845;--metal2:#302e2b;--screen:#0f0e12;color-scheme:dark}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--ui);font-size:17px;line-height:1.55;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:var(--accent)}
img,svg{max-width:100%}
img{display:block}
h1,h2,h3{font-family:var(--brand);font-weight:600;line-height:1.08;margin:0;text-wrap:balance;letter-spacing:-.02em}
h1{font-size:clamp(2.6rem,5vw,4.3rem);font-weight:700}
h2{font-size:clamp(2rem,3.4vw,2.9rem)}
h3{font-size:1.3rem;letter-spacing:-.01em}
p{margin:0}
.eyebrow{font-family:var(--brand);font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);font-weight:600}
.lede{font-size:1.18rem;color:var(--fg2);max-width:62ch}
.wrap{max-width:var(--wrap);margin:0 auto;padding-inline:24px}
section.block{padding-block:88px}
section.block+section.block{border-top:1px solid var(--line)}
.stack{display:grid;gap:14px}
.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}.g3{grid-template-columns:repeat(3,minmax(0,1fr))}.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:900px){.g3,.g4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:640px){.g2,.g3,.g4{grid-template-columns:1fr}}
.card{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:26px;min-width:0}
.tag{display:inline-flex;align-items:center;gap:6px;padding:5px 11px;border-radius:999px;font-family:var(--brand);font-size:.8rem;font-weight:600;background:var(--accent-soft);color:var(--accent)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 24px;border-radius:12px;border:1px solid var(--line2);background:var(--paper);color:var(--fg);font-family:var(--brand);font-size:1.05rem;font-weight:500;cursor:pointer;text-decoration:none;transition:transform .12s,background .12s,box-shadow .12s;letter-spacing:.005em}
.btn:hover{transform:translateY(-1px);box-shadow:0 8px 20px -12px rgba(31,30,27,.4)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.primary:hover{background:var(--accent-hi);border-color:var(--accent-hi)}
.btn.lg{padding:16px 30px;font-size:1.12rem}
.btn:focus-visible,.chip:focus-visible,.navlink:focus-visible,input:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.chip{padding:9px 16px;border-radius:999px;border:1px solid var(--line2);background:var(--paper);color:var(--fg);font-family:var(--brand);font-size:.95rem;font-weight:500;cursor:pointer}
.chip[aria-pressed="true"]{background:var(--accent-soft);border-color:var(--accent);color:var(--accent)}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.mono{font-family:var(--mono);font-size:.86rem}.num{font-variant-numeric:tabular-nums}
.muted{color:var(--muted)}.fg2{color:var(--fg2)}.small{font-size:.92rem}
.sw{display:inline-flex;align-items:center;gap:10px;cursor:pointer;font-family:var(--brand);font-weight:500;font-size:1rem}
.sw input{appearance:none;width:46px;height:26px;border-radius:999px;background:var(--line2);position:relative;transition:background .2s;margin:0;cursor:pointer}
.sw input::after{content:"";position:absolute;top:3px;left:3px;width:20px;height:20px;border-radius:50%;background:#fff;transition:transform .2s;box-shadow:0 1px 2px rgba(0,0,0,.2)}
.sw input:checked{background:var(--accent)}.sw input:checked::after{transform:translateX(20px)}

/* header */
header.top{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 86%,transparent);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
header.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;height:84px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--fg)}
.brand img{width:38px;height:38px}
.brand .word{font:600 1.85rem/1 var(--brand);letter-spacing:-.02em}
.brand b{font:500 .92rem/1 var(--brand);letter-spacing:.06em;color:var(--accent);background:var(--accent-soft);border-radius:7px;padding:5px 7px 4px;margin-left:-2px}
nav.main{display:flex;gap:6px}
.navlink{padding:10px 16px;border-radius:10px;text-decoration:none;color:var(--fg2);font-family:var(--brand);font-weight:500;font-size:1.1rem}
.navlink[aria-current="page"]{color:var(--fg);background:var(--paper);box-shadow:0 1px 2px rgba(31,30,27,.06)}
.navlink:hover{color:var(--fg)}
.top .btn{padding:11px 20px;font-size:1rem}
@media (max-width:760px){nav.main{position:fixed;left:0;right:0;bottom:0;padding:8px 8px calc(8px + env(safe-area-inset-bottom,0px));background:var(--paper);border-top:1px solid var(--line);justify-content:space-around;z-index:20}.navlink{font-size:.95rem;padding:8px 8px}.top .btn{display:none}body{padding-bottom:64px}header.top .wrap{height:72px}.brand img{width:32px;height:32px}.brand .word{font-size:1.55rem}}

/* hero */
.hero{position:relative;padding-block:64px 44px;overflow:hidden}
.hero .halo{position:absolute;right:-10%;top:-20%;width:60%;height:120%;background:radial-gradient(ellipse at 70% 40%,color-mix(in srgb,var(--spiral) 14%,transparent),transparent 60%);pointer-events:none}
.hero .wrap{position:relative;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:56px;align-items:center}
@media (max-width:1000px){.hero .wrap{grid-template-columns:1fr;gap:36px}}
.hero-copy{display:grid;gap:22px}
.hero h1 span{display:inline-block;opacity:0;transform:translateY(12px);animation:rise .7s cubic-bezier(.2,.7,.2,1) forwards}
.hero h1 span:nth-child(2){animation-delay:.15s;color:var(--accent)}
@keyframes rise{to{opacity:1;transform:none}}
.hero .ctas{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.hero-kv{display:flex;flex-wrap:wrap;gap:8px 20px;font-size:.92rem;color:var(--fg2)}
.hero-kv span::before{content:"✓";color:var(--ok);font-weight:700;margin-right:6px}
.hv{position:relative;min-width:0}
.win{background:var(--paper);border:1px solid var(--line);border-radius:18px;box-shadow:0 2px 6px rgba(31,30,27,.07),0 40px 90px -36px rgba(95,46,146,.45);overflow:hidden}
.win .bar{display:flex;align-items:center;gap:10px;padding:10px 16px;border-bottom:1px solid var(--line);background:var(--side);font-family:var(--brand);font-size:.8rem;color:var(--fg2)}
.win .bar .dots{display:flex;gap:6px}.win .bar .dots i{width:11px;height:11px;border-radius:50%;background:var(--line2);display:block}
.win .bar .pill{margin-left:auto;display:inline-flex;align-items:center;gap:6px;padding:3px 9px;border-radius:999px;border:1px solid var(--line2);background:var(--paper);color:var(--ok);font-weight:600;font-size:.74rem}
.win .bar .pill i{width:6px;height:6px;border-radius:50%;background:var(--ok)}
.win .grid2{display:grid;grid-template-columns:176px minmax(0,1fr)}
@media (max-width:560px){.win .grid2{grid-template-columns:1fr}.win .sb{display:none}}
.win .sb{background:var(--side);border-right:1px solid var(--line);padding:14px 12px;font-size:.78rem;display:grid;gap:6px;align-content:start}
.win .sb .abrand{display:flex;align-items:center;gap:8px;padding:4px 4px 12px}
.win .sb .abrand img{width:26px;height:26px}
.win .sb .abrand .w{font:600 1.15rem/1 var(--brand);letter-spacing:-.015em;color:var(--fg)}
.win .sb .abrand b{font:500 .62rem/1 var(--brand);letter-spacing:.06em;color:var(--accent);background:var(--accent-soft);border-radius:5px;padding:3px 5px 2px}
.win .sb .newchat{border:1px solid var(--line2);border-radius:9px;padding:7px 10px;text-align:center;background:var(--paper);font-family:var(--brand);font-weight:500;color:var(--fg);margin-bottom:6px}
.win .sb .h{font-family:var(--brand);font-size:.64rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin:8px 0 2px}
.win .sb .it{padding:6px 8px;border-radius:7px;color:var(--fg2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.win .sb .it.on{background:var(--paper);color:var(--fg);box-shadow:0 1px 2px rgba(31,30,27,.06)}
.win .sb .it small{display:block;color:var(--muted);font-size:.66rem}
.win .main{padding:18px 22px;display:grid;gap:12px;min-width:0}
.win .q{justify-self:end;background:var(--paper-2);border-radius:12px;padding:9px 13px;font-size:.88rem;max-width:88%}
.win .a{font-family:var(--serif);font-size:1.02rem;line-height:1.65}
.win .a sup{color:var(--accent);font-weight:600;font-size:.68em}
.win .notes{border-top:1px solid var(--line);padding-top:10px;display:grid;gap:6px}
.win .notes .h{display:flex;align-items:center;justify-content:space-between;font-family:var(--brand);font-size:.64rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.win .notes .sel{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line2);border-radius:6px;padding:2px 8px;font-size:.72rem;color:var(--fg);letter-spacing:0;text-transform:none;background:var(--paper)}
.win .notes .sel b{color:var(--accent);font-weight:600;min-width:66px;display:inline-block}
.win .notes ol{margin:0;padding-left:1.3em;font-family:var(--serif);font-size:.82rem;line-height:1.5;color:var(--fg2)}
.win .notes ol li{animation:fade .4s}
@keyframes fade{from{opacity:.2}to{opacity:1}}
.win .acts{display:flex;gap:12px;align-items:center;font-family:var(--brand);font-size:.74rem;color:var(--muted);padding-top:4px;flex-wrap:wrap}
.win .acts .dx{color:var(--accent);font-weight:600}
.float{position:absolute;background:var(--paper);border:1px solid var(--line);border-radius:14px;box-shadow:0 14px 34px -14px rgba(31,30,27,.35);padding:12px 14px;font-size:.84rem;display:grid;gap:2px;animation:bob 6s ease-in-out infinite}
.float b{font-family:var(--brand);font-weight:600}
.float .k{font-family:var(--brand);font-size:.64rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.float.f1{left:-20px;bottom:-18px;animation-delay:-2s}
.float.f2{right:-16px;bottom:-18px}
.float .v{font-family:var(--mono);font-size:1.2rem;color:var(--ok);font-weight:500}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}
@media (max-width:1000px){.float.f1{left:8px}.float.f2{right:8px}}
@media (max-width:560px){.float.f2{display:none}}

/* proof strip */
.proof{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:16px;overflow:hidden}
.proof div{background:var(--paper);padding:22px 24px}
.proof b{display:block;font-family:var(--brand);font-size:1.9rem;font-weight:600;letter-spacing:-.02em}
.proof span{font-size:.92rem;color:var(--fg2)}
@media (max-width:820px){.proof{grid-template-columns:repeat(2,minmax(0,1fr))}}

/* workflow scene */
.scene{background:var(--paper);border:1px solid var(--line);border-radius:20px;padding:28px 22px 18px;overflow:hidden;position:relative}
.scene svg{width:100%;height:auto;display:block}
.scene .legend{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;font-family:var(--ui);font-size:.9rem;color:var(--fg2);padding:14px 8px 0}
.scene .legend b{color:var(--fg);font-family:var(--brand);font-weight:600;display:block;font-size:1rem}
.scene .legend div:nth-child(2){text-align:center}.scene .legend div:nth-child(3){text-align:right}
@media (max-width:640px){.scene .legend{grid-template-columns:1fr}.scene .legend div{text-align:left!important}}
.wf-doc{animation:wfIn 10s cubic-bezier(.45,0,.2,1) infinite;transform-box:fill-box;transform-origin:center}
.wf-doc.d2{animation-delay:.9s}.wf-doc.d3{animation-delay:1.8s}.wf-doc.d4{animation-delay:2.7s}
@keyframes wfIn{0%{transform:translate(0,0) rotate(-3deg);opacity:0}6%{opacity:1}22%{transform:translate(150px,10px) rotate(0)}40%{transform:translate(300px,64px) scale(.25);opacity:0}100%{transform:translate(300px,64px) scale(.25);opacity:0}}
.wf-scr{opacity:0;animation:wfScr 10s ease infinite}
.wf-scr.s1{animation-delay:0s}.wf-scr.s2{animation-delay:.25s}.wf-scr.s3{animation-delay:.5s}.wf-scr.s4{animation-delay:.75s}
@keyframes wfScr{0%,44%{opacity:0;transform:translateX(-6px)}50%{opacity:1;transform:none}92%{opacity:1}100%{opacity:0}}
.wf-mark{opacity:0;animation:wfMark 10s ease infinite;transform-box:fill-box;transform-origin:center}
.wf-mark.m2{animation-delay:.35s}.wf-mark.m3{animation-delay:.7s}
@keyframes wfMark{0%,54%{opacity:0;transform:scale(.2)}60%{opacity:1;transform:scale(1.3)}64%{transform:scale(1)}92%{opacity:1}100%{opacity:0}}
.wf-page{animation:wfOut 10s cubic-bezier(.4,0,.2,1) infinite;transform-box:fill-box;transform-origin:center}
@keyframes wfOut{0%,62%{transform:translate(-250px,-60px) scale(.3);opacity:0}68%{opacity:1}86%{transform:translate(0,0) scale(1);opacity:1}95%{opacity:1;transform:none}100%{opacity:0;transform:none}}
.wf-fn{animation:wfFn 10s ease infinite;transform-box:fill-box;transform-origin:center;opacity:0}
.wf-fn.n2{animation-delay:.25s}.wf-fn.n3{animation-delay:.5s}
@keyframes wfFn{0%,84%{opacity:0;transform:scale(.2)}88%{opacity:1;transform:scale(1.25)}91%{transform:scale(1)}96%{opacity:1}100%{opacity:0}}
.wf-spin{transform-box:fill-box;transform-origin:center;animation:spin 12s linear infinite}
.wf-glow{animation:wfGlow 10s ease infinite;transform-box:fill-box;transform-origin:center}
@keyframes wfGlow{0%,26%{opacity:.12;transform:scale(1)}36%,58%{opacity:.6;transform:scale(1.15)}72%,100%{opacity:.12;transform:scale(1)}}
.wf-led{animation:wfLed 1.2s ease-in-out infinite}
@keyframes wfLed{50%{opacity:.35}}
.wf-prog{animation:wfProg 10s linear infinite;transform-box:fill-box;transform-origin:left}
@keyframes wfProg{0%,24%{transform:scaleX(0);opacity:0}28%{opacity:1}58%{transform:scaleX(1);opacity:1}64%,100%{opacity:0;transform:scaleX(1)}}
.wf-cloud{animation:wfCloud 10s ease infinite}
@keyframes wfCloud{0%,30%{opacity:.35}40%,60%{opacity:1}72%,100%{opacity:.35}}
.wf-x{stroke-dasharray:44;stroke-dashoffset:44;animation:wfX 10s ease infinite}
@keyframes wfX{0%,38%{stroke-dashoffset:44}46%{stroke-dashoffset:0}100%{stroke-dashoffset:0}}
.wf-dash{stroke-dasharray:6 8;animation:wfDash 1.6s linear infinite}
@keyframes wfDash{to{stroke-dashoffset:-28}}
@keyframes spin{to{transform:rotate(360deg)}}

/* split sections */
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;align-items:center}
@media (max-width:900px){.split{grid-template-columns:1fr;gap:32px}}
.split.rev>.vis{order:-1}
@media (max-width:900px){.split.rev>.vis{order:0}}
.vis{min-width:0}
.frame{background:var(--side);border:1px solid var(--line);border-radius:20px;padding:28px;display:grid;place-items:center;position:relative;overflow:hidden}
.frame img{border-radius:10px;box-shadow:0 2px 10px rgba(31,30,27,.14);max-height:520px;width:auto}
.frame .badge{position:absolute;background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:10px 12px;font-family:var(--brand);font-size:.84rem;box-shadow:0 14px 34px -14px rgba(31,30,27,.35)}
.frame .badge b{display:block;color:var(--ok)}
.checklist{list-style:none;margin:0;padding:0;display:grid;gap:12px}
.checklist li{padding-left:30px;position:relative;color:var(--fg2)}
.checklist li b{color:var(--fg);font-family:var(--brand);font-weight:600}
.checklist li::before{content:"";position:absolute;left:2px;top:.45em;width:14px;height:8px;border-left:2.5px solid var(--ok);border-bottom:2.5px solid var(--ok);transform:rotate(-45deg)}

/* stage (demo) */
.stage{position:relative;background:var(--paper);border:1px solid var(--line);border-radius:20px;box-shadow:0 2px 6px rgba(31,30,27,.07),0 30px 70px -30px rgba(95,46,146,.35);overflow:hidden}
.stage .top{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:11px 16px;border-bottom:1px solid var(--line);background:var(--side);font-family:var(--brand);font-size:.86rem;color:var(--fg2)}
.stage .top .dots{display:flex;gap:6px}.stage .top .dots i{width:11px;height:11px;border-radius:50%;background:var(--line2);display:block}
.stage .top .net{display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:999px;border:1px solid var(--line2);background:var(--paper);color:var(--ok);font-weight:600;font-size:.78rem}
.stage .top .net i{width:7px;height:7px;border-radius:50%;background:var(--ok)}
.stage .top .net.off{color:var(--fg2)}.stage .top .net.off i{background:var(--muted)}
.stage .body{position:relative;display:grid;grid-template-columns:230px 170px minmax(0,1fr);min-height:420px}
@media (max-width:900px){.stage .body{grid-template-columns:1fr;min-height:0}}
.stage canvas{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:2}
.lib{padding:18px 16px;border-right:1px solid var(--line);background:var(--side);display:grid;gap:8px;align-content:start}
@media (max-width:900px){.lib{border-right:0;border-bottom:1px solid var(--line);grid-template-columns:repeat(3,minmax(0,1fr))}}
.lib .h{font-family:var(--brand);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-weight:600;margin-bottom:2px}
@media (max-width:900px){.lib .h{grid-column:1/-1}}
.doc{display:flex;gap:8px;align-items:center;padding:9px 11px;border-radius:10px;background:var(--paper);border:1px solid var(--line);font-size:.82rem;line-height:1.25;transition:border-color .3s,box-shadow .3s,transform .3s;min-width:0}
.doc .k{font-family:var(--mono);font-size:.64rem;padding:2px 5px;border-radius:4px;background:var(--paper-2);color:var(--fg2);flex:none}
.doc .t{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.doc.lit{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft);transform:translateX(3px)}
.doc.lit .k{background:var(--accent);color:#fff}
.core{display:grid;place-items:center;position:relative;padding:20px 0}
.core svg{width:120px;height:120px;overflow:visible}
.core .ring{position:absolute;width:160px;height:160px;border-radius:50%;border:1px solid var(--accent);opacity:0;top:50%;left:50%;transform:translate(-50%,-50%) scale(.6)}
.core.think .ring{animation:pulse 1.4s ease-out infinite}.core.think .ring:nth-child(3){animation-delay:.7s}
@keyframes pulse{0%{opacity:.5;transform:translate(-50%,-50%) scale(.6)}100%{opacity:0;transform:translate(-50%,-50%) scale(1.5)}}
.core .lbl{position:absolute;bottom:16px;left:0;right:0;text-align:center;font-family:var(--brand);font-size:.74rem;color:var(--muted);letter-spacing:.06em;text-transform:uppercase}
.core.think .lbl{color:var(--accent)}
.spiralpath{fill:none;stroke:var(--spiral);stroke-width:12;stroke-linecap:round;transform-origin:50% 50%;animation:spin 14s linear infinite}
.core.think .spiralpath{animation-duration:2.2s}
@media (max-width:900px){.core{padding:14px 0;border-bottom:1px solid var(--line)}.core svg{width:72px;height:72px}.core .lbl{display:none}}
.ans{padding:22px 26px;display:grid;gap:14px;align-content:start;min-width:0}
.prompt{display:flex;align-items:center;gap:10px;padding:11px 15px;border:1px solid var(--line2);border-radius:12px;background:var(--paper);font-size:1rem;min-height:46px;box-shadow:0 1px 2px rgba(31,30,27,.05)}
.prompt .cur{width:2px;height:18px;background:var(--accent);animation:blink 1s steps(2) infinite}
@keyframes blink{50%{opacity:0}}
.prompt .mode{margin-left:auto;font-family:var(--brand);font-size:.74rem;padding:3px 9px;border-radius:999px;background:var(--accent-soft);color:var(--accent);white-space:nowrap}
.answer{font-family:var(--serif);font-size:1.06rem;line-height:1.7;min-height:96px;color:var(--fg)}
.answer sup{color:var(--accent);font-weight:600;font-size:.68em;margin-left:1px;display:inline-block;animation:pop .35s cubic-bezier(.2,1.4,.4,1)}
@keyframes pop{from{transform:scale(0) translateY(4px);opacity:0}to{transform:none;opacity:1}}
.srcs{display:flex;flex-wrap:wrap;gap:8px;min-height:38px}
.src{border:1px solid var(--line);border-radius:10px;padding:7px 11px;font-size:.78rem;background:var(--side);animation:pop .35s;min-width:0}
.src b{display:block;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:240px}
.src span{color:var(--muted);font-size:.72rem}
.src i{display:inline-grid;place-items:center;width:16px;height:16px;border-radius:4px;background:var(--accent-soft);color:var(--accent);font-style:normal;font-size:.66rem;font-weight:700;margin-right:5px;vertical-align:-3px}
.exp{display:inline-flex;align-items:center;gap:8px;font-family:var(--brand);font-size:.84rem;color:var(--ok);opacity:0;transition:opacity .4s}
.exp.on{opacity:1}
.exp i{width:16px;height:16px;border-radius:50%;background:var(--ok);display:inline-grid;place-items:center;color:#fff;font-size:.6rem;font-style:normal}
.foot{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--line);background:var(--side)}
@media (max-width:620px){.foot{grid-template-columns:1fr}}
.foot>div{padding:12px 18px;display:grid;grid-template-columns:auto 1fr;gap:4px 14px;align-items:center;min-width:0}
.foot>div+div{border-left:1px solid var(--line)}
@media (max-width:620px){.foot>div+div{border-left:0;border-top:1px solid var(--line)}}
.foot .k{font-family:var(--brand);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);grid-column:1/-1}
.foot .v{font-family:var(--mono);font-size:1.05rem;font-weight:500;white-space:nowrap}
.foot .v.ok{color:var(--ok)}
.foot .bars{display:flex;gap:2px;align-items:flex-end;height:22px;min-width:0;overflow:hidden}
.foot .bars i{flex:1;background:var(--accent);border-radius:2px 2px 0 0;height:10%;transition:height .25s;opacity:.85}
.foot .flat{height:22px;position:relative}
.foot .flat::before{content:"";position:absolute;left:0;right:0;top:50%;border-top:2px solid var(--ok);opacity:.6}
.foot .flat::after{content:"nothing sent";position:absolute;right:0;top:-4px;font-family:var(--brand);font-size:.68rem;color:var(--ok);background:var(--side);padding-left:6px}
.stagehead{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:end;gap:16px}

/* versus */
.vs{display:grid;grid-template-columns:1.2fr 1fr 1fr;border:1px solid var(--line);border-radius:16px;overflow:hidden;background:var(--paper)}
.vs>div{padding:16px 20px;border-bottom:1px solid var(--line);font-size:1rem;min-width:0}
.vs>div:nth-last-child(-n+3){border-bottom:0}
.vs .hd{font-family:var(--brand);font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-weight:600;background:var(--side)}
.vs .o{background:var(--accent-soft)}.vs .hd.o{color:var(--accent)}
.vs .no{color:var(--bad)}.vs .yes{color:var(--ok);font-weight:600}
@media (max-width:620px){.vs{grid-template-columns:1fr 1fr 1fr;font-size:.85rem}.vs>div{padding:10px}}

/* citation lab */
.lab{display:grid;grid-template-columns:320px minmax(0,1fr);gap:28px}
@media (max-width:900px){.lab{grid-template-columns:1fr}}
.lab .controls{display:grid;gap:18px;align-content:start}
.lab label.lbl{display:block;font-family:var(--brand);font-size:.74rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-weight:600;margin-bottom:8px}
.paper{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:34px 38px;font-family:var(--serif);font-size:1.12rem;line-height:1.7;min-width:0;position:relative}
.paper sup{color:var(--accent);font-weight:600;font-size:.7em;margin-left:1px}
.paper .intext{color:var(--accent)}
.paper .sec{margin-top:22px;padding-top:14px;border-top:1px solid var(--line)}
.paper .sec h4{font-family:var(--brand);font-size:.74rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin:0 0 8px}
.paper ol{margin:0;padding-left:1.4em;font-size:.97rem}.paper li{margin:4px 0}
.paper .bib p{font-size:.97rem;padding-left:2em;text-indent:-2em;margin:4px 0}
.paper .render{animation:fade .35s ease}
.paper .copy{position:absolute;top:14px;right:14px;font-family:var(--brand);font-size:.8rem;padding:7px 11px;border-radius:8px;border:1px solid var(--line2);background:var(--paper);color:var(--fg2);cursor:pointer}

/* persona */
.persona .q{font-family:var(--serif);font-size:1.35rem;font-style:italic}
.persona .a{font-family:var(--serif);line-height:1.7;margin-top:10px;font-size:1.05rem}
.persona .a sup{color:var(--accent);font-weight:600;font-size:.7em}
.persona .src{margin-top:14px;display:flex;flex-wrap:wrap;gap:8px}
.srcpill{border:1px solid var(--line);border-radius:10px;padding:8px 12px;font-size:.84rem;background:var(--side);min-width:0}
.srcpill b{display:block;font-weight:600}.srcpill span{color:var(--muted);font-size:.78rem}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
@media (max-width:820px){.steps{grid-template-columns:repeat(2,minmax(0,1fr))}}
.step{text-align:left;padding:18px;border-radius:14px;border:1px solid var(--line);background:var(--paper);color:var(--fg);font:inherit;cursor:pointer;position:relative;overflow:hidden}
.step[aria-pressed="true"]{border-color:var(--accent);box-shadow:inset 0 0 0 1px var(--accent)}
.step .prog{position:absolute;left:0;bottom:0;height:3px;background:var(--accent);width:0}
.step[aria-pressed="true"] .prog{animation:prog 7s linear forwards}
@keyframes prog{to{width:100%}}
.step b{display:block;font-family:var(--brand);font-size:1.2rem;font-weight:600}
.step .n{display:inline-block;font-family:var(--brand);font-size:.74rem;letter-spacing:.08em;color:var(--accent);margin-bottom:6px}
.stepbody{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.3fr);gap:28px;margin-top:24px;align-items:center}
@media (max-width:900px){.stepbody{grid-template-columns:1fr}}
.stepvis{background:var(--side);border:1px solid var(--line);border-radius:16px;padding:24px;display:grid;place-items:center;min-height:320px}
.stepvis img{max-height:320px;width:auto;border-radius:8px;box-shadow:0 2px 8px rgba(31,30,27,.12);animation:fade .4s}
.stepvis .mocknotes{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:20px 22px;font-family:var(--serif);width:100%;max-width:560px;animation:fade .4s}
.stepvis .mocknotes h5{font-family:var(--brand);font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin:0 0 6px;font-weight:600}
.stepvis .mocknotes p{font-size:.98rem;line-height:1.65}
.stepvis .mocknotes sup{color:var(--accent);font-weight:600;font-size:.68em}
.stepvis .mocknotes ol{margin:8px 0 0;padding-left:1.3em;font-size:.84rem;color:var(--fg2);line-height:1.5}

/* file types */
.ftypes{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
@media (max-width:1000px){.ftypes{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:560px){.ftypes{grid-template-columns:1fr}}
.ft{display:grid;gap:10px;align-content:start}
.ft .ex{display:flex;flex-wrap:wrap;gap:6px}
.ft .ex span{font-family:var(--mono);font-size:.8rem;padding:4px 9px;border-radius:6px;background:var(--accent-soft);color:var(--accent);border:1px solid transparent}
.ft.no .ex span{background:var(--paper-2);color:var(--fg2);border-color:var(--line)}
.ft p{font-size:.92rem;color:var(--fg2)}

/* modes */
.modetabs{display:grid;gap:10px}
.modetab{display:grid;grid-template-columns:auto 1fr;gap:12px;align-items:start;padding:15px 17px;border-radius:14px;border:1px solid var(--line);background:var(--paper);cursor:pointer;color:var(--fg);font:inherit;text-align:left}
.modetab[aria-pressed="true"]{border-color:var(--accent);background:var(--accent-soft)}
.modetab .dot{width:12px;height:12px;border-radius:50%;border:2px solid var(--line2);margin-top:6px}
.modetab[aria-pressed="true"] .dot{border-color:var(--accent);background:var(--accent)}
.modetab b{display:block;font-family:var(--brand);font-size:1.05rem}
.modetab span{font-size:.92rem;color:var(--fg2)}
.modeout{padding:18px 20px;border-radius:14px;background:var(--paper);border:1px solid var(--line);font-family:var(--serif);line-height:1.65;min-height:120px;font-size:1.04rem}
.modeout sup{color:var(--accent);font-weight:600;font-size:.68em}
.modeout .lbl{font-family:var(--brand);font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);display:block;margin-bottom:6px}
table{border-collapse:collapse;width:100%;font-size:.96rem}
th,td{text-align:left;padding:12px 10px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-family:var(--brand);font-size:.76rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-weight:600}
.tablewrap{overflow-x:auto}

/* packs */
.packs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
@media (max-width:620px){.packs{grid-template-columns:1fr}}
.pack{display:grid;gap:10px;align-content:start}
.pack.mega{grid-column:1/-1;background:linear-gradient(135deg,var(--accent-soft),var(--paper) 60%)}
.pack .h{display:flex;justify-content:space-between;gap:10px;align-items:start}
.pack .price{font-family:var(--brand);font-size:1.5rem;font-weight:600;white-space:nowrap}
.pack .price.free{color:var(--ok)}
.pack .meta{display:flex;gap:12px;flex-wrap:wrap;font-size:.82rem;color:var(--muted)}
.pack .meta span{font-family:var(--mono)}
.pack ul{margin:0;padding-left:1.1em;font-size:.92rem;color:var(--fg2)}
.pack.mega ul{columns:2;column-gap:24px}
@media (max-width:620px){.pack.mega ul{columns:1}}
.pack .ex{font-family:var(--serif);font-style:italic;font-size:.95rem;color:var(--fg2);padding:8px 12px;border-left:3px solid var(--accent);background:var(--paper-2);border-radius:0 8px 8px 0}
.pack .row{display:flex;gap:8px;flex-wrap:wrap}
.pack .row .btn{padding:10px 16px;font-size:.95rem}
.pack.in{border-color:var(--accent);box-shadow:inset 0 0 0 1px var(--accent)}
.shelf{position:sticky;top:100px}
.shelf .row{display:flex;justify-content:space-between;gap:10px;padding:8px 0;border-bottom:1px solid var(--line);font-size:.94rem}
.shelf .tot{display:flex;justify-content:space-between;align-items:baseline;padding-top:12px}
.shelf .tot b{font-family:var(--brand);font-size:2.2rem;font-weight:600}
.packlayout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:28px;align-items:start}
@media (max-width:1000px){.packlayout{grid-template-columns:1fr}.shelf{position:static}}
.disc{font-size:.88rem;padding:8px 10px;border-radius:8px;background:var(--accent-soft);color:var(--accent)}
.psearch{padding:13px 15px;border-radius:12px;border:1px solid var(--line2);background:var(--paper);color:var(--fg);font:inherit;width:100%;max-width:440px}

/* pricing */
.tiers{display:grid;grid-template-columns:1fr 1.15fr 1fr;gap:18px;align-items:stretch}
@media (max-width:900px){.tiers{grid-template-columns:1fr}}
.tier{display:grid;gap:14px;align-content:start}
.tier.hi{border-color:var(--accent);box-shadow:0 24px 50px -30px rgba(95,46,146,.5)}
.tier .p{font-family:var(--brand);font-size:3rem;font-weight:600;line-height:1;letter-spacing:-.02em}
.tier .p small{font-family:var(--ui);font-size:.95rem;color:var(--muted);font-weight:500;letter-spacing:0}
.tier ul{margin:0;padding:0;list-style:none;display:grid;gap:9px;font-size:.96rem}
.tier li{padding-left:24px;position:relative}
.tier li::before{content:"";position:absolute;left:0;top:.5em;width:12px;height:7px;border-left:2px solid var(--ok);border-bottom:2px solid var(--ok);transform:rotate(-45deg)}
.tier li.no{color:var(--muted)}
.tier li.no::before{border:0;width:10px;height:0;border-top:2px solid var(--line2);top:.75em;transform:none}
.seg{display:inline-flex;border:1px solid var(--line2);border-radius:12px;overflow:hidden;background:var(--paper)}
.seg button{padding:10px 16px;border:0;background:transparent;color:var(--fg2);font-family:var(--brand);font-size:1rem;font-weight:500;cursor:pointer}
.seg button[aria-pressed="true"]{background:var(--accent);color:#fff}
.est{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:28px;align-items:center}
@media (max-width:820px){.est{grid-template-columns:1fr}}
input[type=range]{width:100%;accent-color:var(--accent)}
.bar{height:14px;border-radius:999px;background:var(--paper-2);border:1px solid var(--line);overflow:hidden;position:relative}
.bar i{display:block;height:100%;background:var(--accent);width:0;transition:width .3s}
.bar i.over{background:var(--bad)}
.verdict{padding:18px 20px;border-radius:14px;border:1px solid var(--line);background:var(--paper-2)}
.verdict b{font-family:var(--brand);font-size:1.35rem;font-weight:600;display:block;margin-bottom:4px}
details{border-top:1px solid var(--line);padding:16px 0}
details:last-of-type{border-bottom:1px solid var(--line)}
summary{cursor:pointer;font-weight:600;font-family:var(--brand);font-size:1.08rem;list-style:none;display:flex;justify-content:space-between;gap:12px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--muted);font-weight:400}
details[open] summary::after{content:"–"}
details p{margin-top:10px;color:var(--fg2);max-width:72ch}
.dl{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
@media (max-width:720px){.dl{grid-template-columns:1fr}}
.dl .btn{flex-direction:column;gap:2px;padding:18px}
.dl .btn small{font-weight:400;color:var(--muted);font-family:var(--ui);font-size:.86rem}
.dl .btn.primary small{color:rgba(255,255,255,.8)}
.cta-band{background:linear-gradient(135deg,var(--accent-soft),var(--paper) 70%);border:1px solid var(--line);border-radius:20px;padding:40px;display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:20px}

footer{border-top:1px solid var(--line);padding-block:48px;color:var(--muted);font-size:.94rem}
footer .wrap{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px}
@media (max-width:820px){footer .wrap{grid-template-columns:1fr 1fr}}
@media (max-width:520px){footer .wrap{grid-template-columns:1fr}}
footer h4{font-family:var(--brand);font-size:.8rem;letter-spacing:.12em;text-transform:uppercase;color:var(--fg2);margin:0 0 10px}
footer ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}
footer a{color:var(--fg2);text-decoration:none}footer a:hover{color:var(--accent)}
footer .brand .word{font-size:1.5rem}footer .brand img{width:30px;height:30px}
.toast{position:fixed;left:50%;bottom:calc(84px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);background:var(--fg);color:var(--bg);padding:10px 16px;border-radius:10px;font-size:.92rem;opacity:0;pointer-events:none;transition:opacity .2s;z-index:30;max-width:90vw}
.toast.show{opacity:1}
.pagehead{padding-block:64px 24px}
@media (prefers-reduced-motion:reduce){.hero h1 span{animation:none;opacity:1;transform:none}.spiralpath,.core.think .ring,.answer sup,.src,.float,.step .prog,.win .notes ol li,.wf-doc,.wf-page,.wf-glow,.wf-led,.wf-cloud,.wf-x,.wf-dash,.wf-spin,.wf-scr,.wf-mark,.wf-prog{animation:none}.wf-doc,.wf-page,.wf-fn,.wf-scr,.wf-mark{opacity:1}.wf-page{transform:none}.btn:hover{transform:none}.prompt .cur{animation:none}}