/* Base (replaces the artifact page skeleton) */
html{color-scheme:light;-webkit-text-size-adjust:100%}
:root{padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
body{margin:0}
img{max-width:100%}
[hidden]{display:none!important}
.app-route #app{visibility:hidden}

/* Layout: graph-paper canvas. Landing = editorial serif headlines over a live spreadsheet; app = top bar, curriculum laid out as a spreadsheet, lesson = brief rail + sheet + docked check bar. */
:root{
  --paper:#F5F6F2; --surface:#FFFFFF; --surface-2:#EEEFEA; --sunken:#E7E9E3; --line:#DFE1DA; --line-strong:#C5C9BF; --grid:rgba(22,26,34,.055);
  --ink:#111318; --muted:#5B6068; --faint:#8C9198;
  --accent:#2F3DF5; --accent-ink:#FFFFFF; --accent-soft:#E3E6FF;
  --hl:#FFE14A; --hl-soft:#FFF5C2; --hl-ink:#3D3200;
  --good:#0D8A52; --good-soft:#DAF1E5; --bad:#D4372C; --bad-soft:#FBE3E0; --warn:#A86A00; --warn-soft:#FBEFD4; --flame:#E65A1C;
  --ref1:#2F6BE6; --ref2:#D63A5A; --ref3:#8A4BD6; --ref4:#0F9168; --ref5:#C47A08; --ref6:#0B8DA8;
  --head:#F0F1EC; --sel:rgba(47,61,245,.09);
  --f-display:"Instrument Serif","Iowan Old Style",Georgia,serif;
  --f-ui:"Geist",system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-mono:"Geist Mono",ui-monospace,"SF Mono",Menlo,Consolas,monospace;
  --shadow:0 1px 2px rgba(17,19,24,.06),0 12px 32px -16px rgba(17,19,24,.25);
  --r:14px;
}
@media (prefers-color-scheme: dark){ :root:not([data-theme="light"]){
  --paper:#0B0D11; --surface:#12151B; --surface-2:#191D25; --sunken:#0F1217; --line:#232833; --line-strong:#333A48; --grid:rgba(255,255,255,.035);
  --ink:#ECEEF2; --muted:#9CA2AD; --faint:#6D7480;
  --accent:#8590FF; --accent-ink:#0B0D11; --accent-soft:#1D2150;
  --hl:#F5D63D; --hl-soft:#3A3310; --hl-ink:#FBEA9A;
  --good:#3DCC8C; --good-soft:#0F2E1E; --bad:#FF7B6E; --bad-soft:#3A1714; --warn:#F2B43C; --warn-soft:#352710; --flame:#FF8C4D;
  --ref1:#6EA0FF; --ref2:#FF7088; --ref3:#B98FFF; --ref4:#3DD39E; --ref5:#F4AA3D; --ref6:#3CC6DF;
  --head:#161A21; --sel:rgba(133,144,255,.14);
  --shadow:0 1px 2px rgba(0,0,0,.35),0 14px 36px -16px rgba(0,0,0,.7);
  color-scheme:dark }}
:root[data-theme="dark"]{
  --paper:#0B0D11; --surface:#12151B; --surface-2:#191D25; --sunken:#0F1217; --line:#232833; --line-strong:#333A48; --grid:rgba(255,255,255,.035);
  --ink:#ECEEF2; --muted:#9CA2AD; --faint:#6D7480;
  --accent:#8590FF; --accent-ink:#0B0D11; --accent-soft:#1D2150;
  --hl:#F5D63D; --hl-soft:#3A3310; --hl-ink:#FBEA9A;
  --good:#3DCC8C; --good-soft:#0F2E1E; --bad:#FF7B6E; --bad-soft:#3A1714; --warn:#F2B43C; --warn-soft:#352710; --flame:#FF8C4D;
  --ref1:#6EA0FF; --ref2:#FF7088; --ref3:#B98FFF; --ref4:#3DD39E; --ref5:#F4AA3D; --ref6:#3CC6DF;
  --head:#161A21; --sel:rgba(133,144,255,.14);
  --shadow:0 1px 2px rgba(0,0,0,.35),0 14px 36px -16px rgba(0,0,0,.7);
  color-scheme:dark }

html,body{height:100%}
body{background:var(--paper);color:var(--ink);font-family:var(--f-ui);font-size:15.5px;line-height:1.55;-webkit-font-smoothing:antialiased;
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:32px 32px}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:40;background:var(--paper)}
*{box-sizing:border-box}
button,input,textarea{font:inherit;color:inherit}
button{cursor:pointer}
a{color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
code,.mono{font-family:var(--f-mono);font-size:.88em}
p code,li code,.hintbox code,.msg p code{background:var(--surface-2);padding:1px 5px;border-radius:5px}
h1,h2,h3{font-family:var(--f-display);font-weight:400;letter-spacing:-.015em;text-wrap:balance;margin:0;line-height:1.02}
em.it{font-style:italic}
.eyebrow{font-family:var(--f-mono);font-size:11.5px;font-weight:500;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.gutter{padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.wrap{max-width:1200px;margin:0 auto}
.ico{width:18px;height:18px;flex:none}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
::selection{background:var(--hl);color:#1a1600}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:12px;padding:12px 20px;font-weight:600;font-size:15px;transition:transform .15s cubic-bezier(.2,.8,.2,1),box-shadow .15s,background .15s;text-decoration:none;white-space:nowrap}
.btn:active{transform:translateY(1px) scale(.99)}
.btn:disabled{opacity:.5;cursor:default}
.btn-primary{background:var(--ink);color:var(--paper);box-shadow:0 1px 0 rgba(255,255,255,.15) inset,0 6px 18px -8px rgba(17,19,24,.6)}
.btn-primary:hover{transform:translateY(-1px)}
.btn-accent{background:var(--accent);color:var(--accent-ink);box-shadow:0 6px 18px -8px var(--accent)}
.btn-accent:hover{transform:translateY(-1px)}
.btn-ghost{background:var(--surface);border:1px solid var(--line-strong)}
.btn-ghost:hover{background:var(--surface-2)}
.btn-good{background:var(--good);color:#fff}
.btn-bad{background:var(--bad);color:#fff}
.btn-warn{background:var(--warn);color:#fff}
.btn-sm{padding:8px 13px;font-size:13.5px;border-radius:10px}
.btn-link{background:none;border:0;padding:4px 2px;color:var(--muted);font-size:13.5px;text-decoration:underline;text-underline-offset:3px}
.kbd{display:inline-flex;align-items:center;gap:3px;font-family:var(--f-mono);font-size:11.5px;color:var(--muted)}
.kbd kbd{font-family:inherit;border:1px solid var(--line-strong);border-bottom-width:2px;border-radius:5px;padding:0 5px;background:var(--surface);line-height:1.6}

/* ---------- Landing ---------- */
.lnav{position:sticky;top:env(safe-area-inset-top,0px);z-index:30;backdrop-filter:saturate(1.4) blur(14px);-webkit-backdrop-filter:saturate(1.4) blur(14px);background:color-mix(in srgb,var(--paper) 78%,transparent);border-bottom:1px solid color-mix(in srgb,var(--line) 70%,transparent)}
.lnav .in{display:flex;align-items:center;gap:22px;padding-block:12px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-family:var(--f-display);font-size:26px;line-height:1;color:var(--ink)}
.brand svg{width:28px;height:28px}
.lnav nav{display:flex;gap:4px;margin-left:12px}
.lnav nav a{text-decoration:none;font-size:14px;color:var(--muted);padding:6px 10px;border-radius:8px}
.lnav nav a:hover{color:var(--ink);background:var(--surface-2)}
.lnav .right{margin-left:auto;display:flex;gap:10px;align-items:center}
@media (max-width:820px){ .lnav nav{display:none} }
@media (max-width:420px){ .lnav .right .btn-ghost{display:none} }

.hero{padding-block:clamp(40px,7vw,96px) 40px}
.hero .kicker{display:inline-flex;align-items:center;gap:8px;font-family:var(--f-mono);font-size:12.5px;color:var(--muted);padding:5px 10px 5px 6px;border:1px solid var(--line);border-radius:99px;background:var(--surface)}
.hero .kicker b{background:var(--hl);color:#1a1600;font-weight:600;padding:1px 7px;border-radius:99px}
.hero h1{font-size:clamp(52px,9.5vw,138px);margin:22px 0 0;letter-spacing:-.03em;line-height:.92}
.hero h1 .cellmark{position:relative;isolation:isolate;display:inline-block;padding:0 .08em;margin:0 -.02em}
.hero h1 .cellmark::before{content:"";position:absolute;inset:.12em -.02em .02em;border:3px solid var(--accent);border-radius:4px;background:var(--sel);z-index:-1}
.hero h1 .cellmark::after{content:"";position:absolute;right:-.06em;bottom:-.02em;width:.13em;height:.13em;background:var(--accent);border:2px solid var(--paper)}
.hero-grid{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:clamp(24px,4vw,56px);align-items:end;margin-top:32px}
@media (max-width:900px){ .hero-grid{grid-template-columns:minmax(0,1fr)} }
.hero .lede{font-size:clamp(17px,1.6vw,20px);color:var(--muted);max-width:44ch;margin:0 0 26px}
.hero .ctas{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.hero .proof{display:flex;gap:22px;flex-wrap:wrap;margin-top:28px;font-size:13.5px;color:var(--muted)}
.hero .proof b{display:block;font-family:var(--f-display);font-size:30px;font-weight:400;color:var(--ink);line-height:1}

.demo{background:var(--surface);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);overflow:hidden;min-width:0}
.demo-top{display:flex;align-items:center;gap:8px;padding:10px 14px;border-bottom:1px solid var(--line);background:var(--head)}
.demo-top .dots{display:flex;gap:6px}.demo-top .dots i{width:10px;height:10px;border-radius:50%;background:var(--line-strong)}
.demo-top .t{font-family:var(--f-mono);font-size:12px;color:var(--muted);margin-left:6px}
.demo-top .live{margin-left:auto;display:inline-flex;align-items:center;gap:6px;font-family:var(--f-mono);font-size:11.5px;color:var(--good)}
.demo-top .live i{width:7px;height:7px;border-radius:50%;background:var(--good);box-shadow:0 0 0 3px color-mix(in srgb,var(--good) 25%,transparent)}
.demo-result{display:flex;align-items:baseline;gap:14px;padding:14px 16px;border-top:1px solid var(--line);flex-wrap:wrap}
.demo-result .val{font-family:var(--f-display);font-size:44px;line-height:1;font-variant-numeric:tabular-nums}
.demo-result .val.err{color:var(--bad)}
.demo-result .why{font-size:14px;color:var(--muted);flex:1;min-width:200px}
.demo-result .why.bad{color:var(--ink)}
.demo-result .why.bad b{color:var(--bad)}
.tries{display:flex;gap:6px;flex-wrap:wrap;padding:0 16px 14px}
.try{font-family:var(--f-mono);font-size:12px;border:1px dashed var(--line-strong);background:transparent;border-radius:8px;padding:4px 8px;color:var(--muted)}
.try:hover{border-style:solid;color:var(--ink)}

.band{padding-block:clamp(56px,8vw,110px)}
.band-head{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:24px;align-items:end;margin-bottom:36px}
@media (max-width:800px){ .band-head{grid-template-columns:minmax(0,1fr)} }
.band-head h2{font-size:clamp(38px,5.4vw,72px);letter-spacing:-.025em}
.band-head p{color:var(--muted);font-size:17px;margin:0;max-width:50ch}
.vs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
@media (max-width:720px){ .vs{grid-template-columns:minmax(0,1fr)} }
.vs .side{border-radius:18px;padding:26px;border:1px solid var(--line);background:var(--surface)}
.vs .side h3{font-size:30px;margin-bottom:14px}
.vs .side ul{margin:0;padding:0;list-style:none;display:grid;gap:12px}
.vs .side li{display:grid;grid-template-columns:22px minmax(0,1fr);gap:10px;font-size:15.5px}
.vs .old{background:var(--sunken)} .vs .old h3{color:var(--muted)} .vs .old li svg{color:var(--faint)}
.vs .new{border-color:var(--ink);box-shadow:var(--shadow)} .vs .new li svg{color:var(--good)}
.player{display:flex;align-items:center;gap:12px;margin-bottom:16px;padding:12px;border-radius:12px;background:var(--surface);border:1px solid var(--line)}
.player .bar{flex:1;height:5px;border-radius:9px;background:var(--line);overflow:hidden}.player .bar span{display:block;height:100%;width:7%;background:var(--faint)}
.player .tm{font-family:var(--f-mono);font-size:12px;color:var(--faint)}

.steps3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
@media (max-width:900px){ .steps3{grid-template-columns:minmax(0,1fr)} }
.stepcard{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:22px;display:grid;gap:14px;align-content:start}
.stepcard .n{font-family:var(--f-mono);font-size:12px;color:var(--accent)}
.stepcard h3{font-size:28px}
.stepcard p{margin:0;color:var(--muted)}
.vignette{border:1px solid var(--line);border-radius:12px;background:var(--paper);padding:12px;font-family:var(--f-mono);font-size:12.5px;display:grid;gap:8px;min-height:120px;align-content:start}
.vignette .fxl{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:7px 10px;white-space:nowrap;overflow:hidden}
.vignette .msgb{border-radius:9px;padding:9px 10px;font-family:var(--f-ui);font-size:13px}
.vignette .msgb.bad{background:var(--bad-soft)} .vignette .msgb.bad b{color:var(--bad)}
.vignette .msgb.good{background:var(--good-soft)} .vignette .msgb.good b{color:var(--good)}
.vignette .streak{display:flex;gap:6px}.vignette .streak i{flex:1;height:28px;border-radius:7px;background:var(--flame);opacity:.9}
.vignette .streak i.off{background:var(--line)}

.map{display:grid;gap:10px}
.map-row{display:grid;grid-template-columns:200px minmax(0,1fr);gap:10px;align-items:stretch}
@media (max-width:720px){ .map-row{grid-template-columns:minmax(0,1fr)} }
.map-row .u{padding:14px 16px;border-radius:12px;background:var(--ink);color:var(--paper)}
.map-row .u b{display:block;font-family:var(--f-display);font-size:22px;font-weight:400}
.map-row .u small{opacity:.7;font-size:12.5px}
.map-row .ls{display:flex;gap:8px;flex-wrap:wrap}
.map-row .l{border:1px solid var(--line);background:var(--surface);border-radius:12px;padding:12px 14px;flex:1 1 170px;min-width:0}
.map-row .l b{display:block;font-size:14.5px}
.map-row .l span{font-family:var(--f-mono);font-size:11.5px;color:var(--muted)}

.teams{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:24px;background:var(--ink);color:var(--paper);border-radius:24px;padding:clamp(24px,4vw,48px);align-items:center}
@media (max-width:820px){ .teams{grid-template-columns:minmax(0,1fr)} }
.teams h2{font-size:clamp(36px,4.6vw,60px)}
.teams p{opacity:.78;font-size:16.5px}
.teams .btn{background:var(--hl);color:#1a1600}
.teamtable{background:color-mix(in srgb,var(--paper) 8%,transparent);border:1px solid color-mix(in srgb,var(--paper) 18%,transparent);border-radius:14px;overflow:hidden;font-size:14px}
.teamtable .r{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr) 70px;gap:10px;padding:10px 14px;border-bottom:1px solid color-mix(in srgb,var(--paper) 12%,transparent);align-items:center}
.teamtable .r:last-child{border-bottom:0}
.teamtable .r.h{font-family:var(--f-mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;opacity:.6}
.teamtable .meter{height:6px;border-radius:9px;background:color-mix(in srgb,var(--paper) 15%,transparent);overflow:hidden}.teamtable .meter span{display:block;height:100%;background:var(--hl)}
.teamtable .num{font-family:var(--f-mono);text-align:right}

.pricing{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;align-items:stretch}
@media (max-width:900px){ .pricing{grid-template-columns:minmax(0,1fr)} }
.pcard{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:26px;display:grid;gap:16px;align-content:start;position:relative}
.pcard.feat{border:2px solid var(--ink);box-shadow:var(--shadow)}
.pcard .ribbon{position:absolute;top:-12px;left:24px;background:var(--hl);color:#1a1600;font-family:var(--f-mono);font-size:11.5px;padding:3px 9px;border-radius:99px}
.pcard h3{font-family:var(--f-ui);font-size:15px;font-weight:600;letter-spacing:0}
.pcard .price{font-family:var(--f-display);font-size:58px;line-height:1}
.pcard .price small{font-family:var(--f-ui);font-size:14px;color:var(--muted)}
.pcard ul{list-style:none;margin:0;padding:0;display:grid;gap:9px;font-size:14.5px}
.pcard li{display:flex;gap:9px;align-items:flex-start}.pcard li svg{color:var(--good);margin-top:3px;width:15px;height:15px}

.faq{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.3fr);gap:40px}
@media (max-width:900px){ .faq{grid-template-columns:minmax(0,1fr)} }
.faq details{border-bottom:1px solid var(--line);padding:16px 0}
.faq summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;gap:16px;font-weight:600;font-size:16.5px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--f-mono);color:var(--muted);transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{margin:10px 0 0;color:var(--muted)}
.longread{max-width:70ch}
.longread h3{font-size:30px;margin:30px 0 10px}
.longread p,.longread li{color:var(--muted);font-size:16.5px}
.longread ol,.longread ul{padding-left:22px;display:grid;gap:6px}
.footer{border-top:1px solid var(--line);padding-block:30px 50px;color:var(--muted);font-size:13.5px}
.footer .in{display:flex;gap:20px;flex-wrap:wrap;align-items:center;justify-content:space-between}
.bigcta{text-align:center;display:grid;gap:22px;justify-items:center}
.bigcta h2{font-size:clamp(46px,7vw,104px);letter-spacing:-.03em;max-width:14ch}
@supports (animation-timeline: view()){
  .rise{animation:rise linear both;animation-timeline:view();animation-range:entry 0% entry 60%}
  @keyframes rise{from{transform:translateY(28px)}to{transform:none}}
}

/* ---------- App shell ---------- */
.abar{position:sticky;top:env(safe-area-inset-top,0px);z-index:30;background:color-mix(in srgb,var(--paper) 86%,transparent);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.abar .in{display:flex;align-items:center;gap:14px;padding-block:10px}
.tabs{display:flex;gap:2px;margin-left:8px}
.tabs a{text-decoration:none;font-size:14px;font-weight:500;color:var(--muted);padding:7px 11px;border-radius:9px;display:inline-flex;gap:6px;align-items:center}
.tabs a.on{color:var(--ink);background:var(--surface);box-shadow:0 1px 2px rgba(0,0,0,.08)}
.tabs a .dotn{background:var(--flame);color:#fff;font-size:11px;font-weight:700;border-radius:99px;padding:0 6px}
.abar .right{margin-left:auto;display:flex;align-items:center;gap:6px}
.seg{display:inline-flex;background:var(--surface-2);border-radius:10px;padding:3px;gap:2px}
.seg button{border:0;background:transparent;border-radius:8px;padding:5px 10px;font-size:13px;font-weight:600;color:var(--muted)}
.seg button[aria-pressed="true"]{background:var(--surface);color:var(--ink);box-shadow:0 1px 2px rgba(0,0,0,.12)}
.stat{display:inline-flex;align-items:center;gap:5px;font-weight:700;font-size:14px;padding:6px 8px;border-radius:9px;font-variant-numeric:tabular-nums}
.stat.streak{color:var(--flame)} .stat.xp{color:var(--ink)} .stat.xp svg{color:var(--hl)}
.iconbtn{width:36px;height:36px;border-radius:10px;border:0;background:transparent;display:grid;place-items:center;color:var(--muted);flex:none}
.iconbtn:hover{background:var(--surface-2);color:var(--ink)}
.cmdk{display:inline-flex;align-items:center;gap:10px;border:1px solid var(--line-strong);background:var(--surface);border-radius:10px;padding:6px 8px 6px 10px;font-size:13.5px;color:var(--muted)}
.probadge{font-family:var(--f-mono);font-size:11.5px;background:var(--hl);color:#1a1600;padding:4px 8px;border-radius:7px}
@media (max-width:880px){ .tabs{display:none} .cmdk .lbl{display:none} .stat .lbl{display:none} }
@media (max-width:560px){ .abar .seg{display:none} .abar .in{gap:8px} .brand span{display:none} }
.mtabs{display:none}
@media (max-width:880px){ .mtabs{display:flex;gap:4px;padding-block:8px;overflow-x:auto} .mtabs a{text-decoration:none;font-size:13.5px;font-weight:600;color:var(--muted);padding:6px 12px;border-radius:99px;border:1px solid var(--line);background:var(--surface);white-space:nowrap} .mtabs a.on{background:var(--ink);color:var(--paper);border-color:var(--ink)} }

.dash{padding-block:28px 80px;display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:28px;align-items:start}
@media (max-width:980px){ .dash{grid-template-columns:minmax(0,1fr)} }
.greet{display:flex;justify-content:space-between;align-items:end;gap:16px;flex-wrap:wrap;margin-bottom:18px}
.greet h1{font-size:clamp(36px,4.6vw,56px)}
.greet p{margin:4px 0 0;color:var(--muted)}
.cont{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,300px);gap:22px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:24px;box-shadow:var(--shadow);position:relative;overflow:hidden}
@media (max-width:720px){ .cont{grid-template-columns:minmax(0,1fr)} }
.cont h2{font-size:clamp(34px,4vw,48px);margin:6px 0 10px}
.cont p{color:var(--muted);margin:0 0 18px}
.chips{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:18px}
.chip{font-family:var(--f-mono);font-size:12px;padding:3px 8px;border-radius:7px;background:var(--surface-2)}
.minisheet{border:1px solid var(--line);border-radius:12px;overflow:hidden;font-family:var(--f-mono);font-size:12px;background:var(--surface);min-width:0}
.minisheet .mfx{display:flex;gap:8px;padding:8px 10px;border-bottom:1px solid var(--line);background:var(--head);white-space:nowrap;overflow:hidden}
.minisheet .mfx i{font-family:Georgia,serif;font-weight:700;color:var(--faint)}
.minisheet table{border-collapse:collapse;width:100%}
.minisheet td{border:1px solid var(--line);padding:4px 7px;height:25px;white-space:nowrap}
.minisheet td.h{background:var(--head);color:var(--faint);text-align:center;width:26px}
.minisheet td.a{background:color-mix(in srgb,var(--ref1) 12%,transparent)}
.minisheet td.b{background:color-mix(in srgb,var(--ref2) 12%,transparent)}
.minisheet td.ans{outline:2px solid var(--good);outline-offset:-2px;color:var(--good);font-weight:700}

.cur{margin-top:30px}
.cur-head{display:flex;justify-content:space-between;align-items:end;gap:16px;flex-wrap:wrap;margin-bottom:14px}
.cur-head h2{font-size:36px}
.cur-head p{margin:0;color:var(--muted);font-size:14px}
.curgrid{border:1px solid var(--line);border-radius:18px;overflow:hidden;background:var(--surface);box-shadow:var(--shadow)}
.cg-row{display:grid;grid-template-columns:44px 210px minmax(0,1fr);border-bottom:1px solid var(--line)}
.cg-row:last-child{border-bottom:0}
.cg-row.h{background:var(--head);font-family:var(--f-mono);font-size:11.5px;color:var(--faint)}
.cg-row.h > div{padding:6px 12px}
.cg-num{background:var(--head);display:grid;place-items:center;font-family:var(--f-mono);font-size:12px;color:var(--faint);border-right:1px solid var(--line)}
.cg-unit{padding:16px;border-right:1px solid var(--line)}
.cg-unit b{display:block;font-family:var(--f-display);font-size:23px;font-weight:400;line-height:1.05}
.cg-unit small{display:block;color:var(--muted);font-size:12.5px;margin-top:4px}
.cg-unit .tag{margin-top:8px}
.cg-cells{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr))}
.cell-l{all:unset;box-sizing:border-box;cursor:pointer;display:grid;gap:4px;align-content:start;padding:14px 16px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);margin:0 -1px -1px 0;position:relative;min-height:104px;transition:background .15s}
.cell-l:hover{background:var(--sel)}
.cell-l:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}
.cell-l .ref{font-family:var(--f-mono);font-size:11px;color:var(--faint)}
.cell-l b{font-size:15px;font-weight:600;line-height:1.25}
.cell-l .fns{font-family:var(--f-mono);font-size:11.5px;color:var(--muted)}
.cell-l .st{position:absolute;top:12px;right:12px;width:22px;height:22px;border-radius:50%;display:grid;place-items:center}
.cell-l .st svg{width:13px;height:13px}
.cell-l.done .st{background:var(--good);color:#fff}
.cell-l.locked .st{color:var(--faint)}
.cell-l.next{background:var(--sel);box-shadow:inset 0 0 0 2px var(--accent)}
.cell-l.next::after{content:"";position:absolute;right:-4px;bottom:-4px;width:8px;height:8px;background:var(--accent);border:2px solid var(--surface);z-index:1}
.cell-l.soon{cursor:default;opacity:.55}
.cell-l .bar2{height:4px;border-radius:9px;background:var(--line);overflow:hidden;margin-top:6px}.cell-l .bar2 span{display:block;height:100%;background:var(--good)}
@media (max-width:720px){ .cg-row{grid-template-columns:minmax(0,1fr)} .cg-num{display:none} .cg-unit{border-right:0;border-bottom:1px solid var(--line)} .cg-row.h{display:none} }
.tag{display:inline-flex;align-items:center;gap:4px;font-family:var(--f-mono);font-size:10.5px;letter-spacing:.05em;text-transform:uppercase;padding:2px 7px;border-radius:6px;width:max-content}
.tag-pro{background:var(--hl-soft);color:var(--hl-ink)} .tag-free{background:var(--good-soft);color:var(--good)} .tag-soon{background:var(--surface-2);color:var(--muted)}

.side{display:grid;gap:16px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:18px}
.card h3{font-family:var(--f-ui);font-size:14px;font-weight:600;letter-spacing:0;margin-bottom:12px;display:flex;align-items:center;justify-content:space-between;gap:8px}
.card h3 .eyebrow{font-weight:500}
.goal{display:flex;align-items:center;gap:16px}
.goal svg{width:80px;height:80px;flex:none}
.goal .big{font-family:var(--f-display);font-size:36px;line-height:1;font-variant-numeric:tabular-nums}
.week{display:grid;grid-template-columns:repeat(7,1fr);gap:6px;margin-top:14px}
.week div{display:grid;justify-items:center;gap:4px;font-family:var(--f-mono);font-size:10.5px;color:var(--faint)}
.week span{width:28px;height:28px;border-radius:8px;background:var(--surface-2);display:grid;place-items:center}
.week .on span{background:var(--flame);color:#fff}
.week .today{color:var(--ink)}
.mastery{display:grid;gap:9px}
.mrow{display:grid;grid-template-columns:96px minmax(0,1fr) 36px;gap:10px;align-items:center;font-size:13px}
.mrow code{font-size:12px;background:none;padding:0}
.mrow .m{height:8px;border-radius:9px;background:var(--surface-2);overflow:hidden}.mrow .m span{display:block;height:100%;border-radius:9px;background:var(--accent)}
.mrow .p{font-family:var(--f-mono);font-size:11.5px;color:var(--muted);text-align:right}
.review-card{background:var(--hl-soft);border-color:color-mix(in srgb,var(--hl) 60%,var(--line))}
.review-card p{margin:0 0 12px;font-size:14px}
.league{list-style:none;margin:0;padding:0;display:grid;gap:2px;counter-reset:rank}
.league li{display:flex;align-items:center;gap:10px;padding:7px 8px;border-radius:9px;font-size:14px;font-variant-numeric:tabular-nums}
.league li::before{counter-increment:rank;content:counter(rank);width:16px;font-family:var(--f-mono);color:var(--faint);font-size:12px}
.league li.me{background:var(--accent-soft);font-weight:700}
.league .av{width:26px;height:26px;border-radius:50%;display:grid;place-items:center;font-size:11px;font-weight:700;color:#fff;flex:none}
.league .pts{margin-left:auto;color:var(--muted);font-family:var(--f-mono);font-size:12.5px}
.note{font-size:12px;color:var(--faint);margin:8px 0 0}

/* ---------- Lesson ---------- */
.lesson{min-height:100%;display:grid;grid-template-rows:auto 1fr auto}
.l-head{display:flex;align-items:center;gap:16px;padding-block:14px}
.pbar{flex:1;height:10px;border-radius:99px;background:var(--surface-2);overflow:hidden;border:1px solid var(--line)}
.pbar span{display:block;height:100%;border-radius:99px;background:var(--ink);transition:width .6s cubic-bezier(.2,.8,.2,1)}
.combo{display:inline-flex;align-items:center;gap:4px;font-weight:700;color:var(--flame);font-size:14px;min-width:54px;justify-content:flex-end;font-variant-numeric:tabular-nums}
.l-body{display:grid;grid-template-columns:minmax(0,370px) minmax(0,1fr);gap:26px;padding-block:6px 130px;align-items:start}
@media (max-width:920px){ .l-body{grid-template-columns:minmax(0,1fr);gap:16px} }
.brief{display:grid;gap:14px;min-width:0}
.brief h2{font-size:clamp(32px,3.4vw,44px)}
.brief .prompt{margin:0;font-size:17px;line-height:1.55}
.sigcard{border:1px solid var(--line);border-radius:14px;background:var(--surface);padding:12px 14px}
.sigcard .sig{font-family:var(--f-mono);font-size:13px;overflow-wrap:anywhere}
.sigcard .sig .fn{color:var(--accent);font-weight:600}
.sigcard ul{margin:8px 0 0;padding:0;list-style:none;display:grid;gap:4px;font-size:13.5px;color:var(--muted)}
.sigcard li code{color:var(--ink);background:none;padding:0}
.tipbox{display:flex;gap:10px;font-size:14px;padding:12px 14px;border-radius:14px;background:var(--surface-2)}
.tipbox b{display:block;font-family:var(--f-mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;font-weight:500;margin-bottom:2px;color:var(--muted)}
.hintbox{padding:12px 14px;border-radius:14px;background:var(--hl-soft);font-size:14.5px}
.hintbox b{color:var(--hl-ink)}
.fillnote{padding:12px 14px;border-radius:14px;background:var(--accent-soft);font-size:14.5px;display:flex;gap:10px;align-items:flex-start}
.fillnote .btn{margin-top:8px}

.sheet{background:var(--surface);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);min-width:0;position:relative}
.fxbar{display:flex;align-items:stretch;border-bottom:1px solid var(--line);position:relative}
.namebox{width:64px;flex:none;display:grid;place-items:center;font-family:var(--f-mono);font-size:13px;font-weight:600;border-right:1px solid var(--line);background:var(--head);border-top-left-radius:18px}
.fxlabel{width:38px;flex:none;display:grid;place-items:center;font-family:Georgia,serif;font-style:italic;font-weight:700;color:var(--faint);border-right:1px solid var(--line)}
.fxwrap{position:relative;flex:1;min-width:0;overflow:hidden}
.fxmirror,.fxin{font-family:var(--f-mono);font-size:15px;line-height:24px;padding:11px 12px;white-space:pre;letter-spacing:0}
.fxmirror{position:absolute;inset:0;pointer-events:none;color:var(--ink)}
.fxmirror .in{display:inline-block;will-change:transform}
.fxin{position:relative;width:100%;border:0;background:transparent;color:transparent;caret-color:var(--ink);outline:none;display:block}
.fxin::placeholder{color:var(--faint)}
.fxwrap.focus{box-shadow:inset 0 -2px 0 var(--accent)}
.tk-fn{color:var(--accent);font-weight:600}.tk-str{color:var(--good)}.tk-num{color:var(--ref5)}.tk-op{color:var(--muted)}
.ac{position:absolute;top:100%;left:102px;z-index:6;min-width:300px;max-width:calc(100% - 110px);background:var(--surface);border:1px solid var(--line-strong);border-radius:12px;box-shadow:var(--shadow);padding:4px;margin-top:4px}
.ac button{display:block;width:100%;text-align:left;border:0;background:transparent;border-radius:8px;padding:7px 10px}
.ac button[aria-selected="true"]{background:var(--accent-soft)}
.ac .n{font-family:var(--f-mono);font-weight:600;font-size:13px}.ac .d{font-size:12.5px;color:var(--muted)}
.arghint{position:absolute;top:100%;left:102px;z-index:5;margin-top:4px;background:var(--ink);color:var(--paper);font-family:var(--f-mono);font-size:12.5px;padding:7px 10px;border-radius:9px;max-width:calc(100% - 110px);box-shadow:var(--shadow)}
.arghint b{text-decoration:underline;text-underline-offset:3px}
.arghint .ad{display:block;font-family:var(--f-ui);font-size:12.5px;opacity:.75;margin-top:2px}
.gridscroll{overflow:auto;border-bottom-left-radius:18px;border-bottom-right-radius:18px}
.grid{display:grid;position:relative;font-family:var(--f-mono);font-size:13px;width:max-content;min-width:100%;user-select:none;touch-action:pan-x pan-y}
.cell{height:34px;padding:0 9px;display:flex;align-items:center;border-right:1px solid var(--line);border-bottom:1px solid var(--line);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;background:var(--surface);position:relative}
.cell.num{justify-content:flex-end}
.cell.hdr{background:var(--head);color:var(--muted);justify-content:center;font-size:12px;position:sticky;top:0;z-index:2}
.cell.rh{background:var(--head);color:var(--muted);justify-content:center;font-size:12px;position:sticky;left:0;z-index:2}
.cell.corner{z-index:3}
.cell.r1{font-weight:600;font-family:var(--f-ui);font-size:13px}
.cell.label{font-family:var(--f-ui);color:var(--muted);font-size:13.5px}
.cell.solved{color:var(--good);font-weight:600}
.cell.target{background:var(--sel);font-weight:600}
.cell .ghost{color:var(--faint);font-weight:500}
.cell.errv{color:var(--bad);font-weight:600}
.cell.filled{background:color-mix(in srgb,var(--accent) 6%,var(--surface))}
.cell.hdr.on,.cell.rh.on{background:var(--accent-soft);color:var(--accent)}
.ov{position:absolute;pointer-events:none;border:2px solid;border-radius:2px;z-index:1}
.ov.fill{background:currentColor;opacity:.1;border:0}
.tgt-ring{position:absolute;pointer-events:none;border:2px dashed var(--accent);border-radius:3px;z-index:1;animation:pulse 1.8s ease-in-out infinite}
.tgt-ring.solid{border-style:solid;animation:none}
.tgt-ring em{position:absolute;top:-22px;right:-2px;font-style:normal;font-family:var(--f-mono);font-size:10.5px;background:var(--accent);color:var(--accent-ink);padding:2px 7px;border-radius:5px 5px 0 5px;white-space:nowrap}
@keyframes pulse{50%{border-color:color-mix(in srgb,var(--accent) 40%,transparent)}}
.fillhandle{position:absolute;width:12px;height:12px;background:var(--accent);border:2px solid var(--surface);z-index:4;cursor:ns-resize;pointer-events:auto;touch-action:none;animation:hpulse 1.2s ease-in-out infinite}
@keyframes hpulse{50%{transform:scale(1.35)}}
.fillprev{position:absolute;border:2px dashed var(--accent);pointer-events:none;z-index:3}
.sheetfoot{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:8px 12px;border-top:1px solid var(--line);font-size:12.5px;color:var(--muted)}
.sheetfoot .tabn{font-weight:600;color:var(--ink);border-bottom:2px solid var(--accent);padding:2px 4px}
.sheetfoot .grow{flex:1}
.explain{border-top:1px solid var(--line);padding:12px 14px;display:grid;gap:6px}
.explain h4{margin:0 0 4px;font-family:var(--f-mono);font-size:11.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);font-weight:500}
.trace{list-style:none;margin:0;padding:0;display:grid;gap:4px}
.trace li{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:12px;align-items:baseline;font-family:var(--f-mono);font-size:12.5px;padding:5px 8px;border-radius:7px;background:var(--surface-2);animation:tin .3s ease both}
.trace li .e{overflow-wrap:anywhere}
.trace li .v{color:var(--accent);font-weight:600;text-align:right;overflow-wrap:anywhere;max-width:280px}
.trace li.err .v{color:var(--bad)}
.trace li.top{background:var(--ink);color:var(--paper)}.trace li.top .v{color:var(--hl)}
@keyframes tin{from{transform:translateX(-6px);opacity:.3}}

.checkbar{position:fixed;left:0;right:0;bottom:0;z-index:25;background:color-mix(in srgb,var(--surface) 92%,transparent);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom,0px);transition:background .25s}
.checkbar .in{display:flex;align-items:center;gap:14px;padding-block:14px;min-height:78px}
.checkbar .msg{flex:1;min-width:0;display:flex;gap:12px;align-items:flex-start;font-size:14px;color:var(--muted)}
.checkbar .badge{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;flex:none}
.checkbar strong{display:block;font-size:24px;font-family:var(--f-display);font-weight:400;line-height:1.1;color:var(--ink)}
.checkbar .msg p{margin:2px 0 0;font-size:14.5px;max-width:72ch;color:var(--ink)}
.checkbar.good{background:var(--good-soft)} .checkbar.good .badge{background:var(--good);color:#fff} .checkbar.good strong{color:var(--good)}
.checkbar.bad{background:var(--bad-soft)} .checkbar.bad .badge{background:var(--bad);color:#fff} .checkbar.bad strong{color:var(--bad)}
.checkbar.near{background:var(--warn-soft)} .checkbar.near .badge{background:var(--warn);color:#fff} .checkbar.near strong{color:var(--warn)}
.checkbar .acts{display:flex;gap:10px;align-items:center;flex:none;flex-wrap:wrap;justify-content:flex-end}
@media (max-width:640px){ .checkbar .in{flex-wrap:wrap} .checkbar .acts{width:100%} .checkbar .acts .btn{flex:1} .checkbar .kbd{display:none} }
.xpfloat{position:fixed;z-index:60;font-family:var(--f-display);font-size:24px;background:var(--hl);color:#1a1600;padding:2px 12px;border-radius:9px;pointer-events:none;animation:floatup 1.1s cubic-bezier(.2,.8,.2,1) forwards}
@keyframes floatup{to{transform:translateY(-54px);opacity:0}}
.keys{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.key{min-width:50px;height:50px;padding:0 12px;display:grid;place-items:center;border-radius:11px;background:var(--surface);border:1px solid var(--line-strong);box-shadow:0 3px 0 var(--line-strong);font-family:var(--f-mono);font-weight:600;font-size:15px;transition:all .1s}
.key.down{background:var(--accent);color:var(--accent-ink);border-color:var(--accent);box-shadow:0 1px 0 var(--accent);transform:translateY(2px)}
.key.ok{background:var(--good);color:#fff;border-color:var(--good);box-shadow:0 3px 0 color-mix(in srgb,var(--good) 55%,#000)}
.plus{color:var(--faint);font-weight:700}
.listen{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;color:var(--muted)}
.listen i{width:8px;height:8px;border-radius:50%;background:var(--good);animation:blink 1.2s infinite}
@keyframes blink{50%{opacity:.25}}

.done-wrap{max-width:660px;margin:0 auto;padding-block:56px 80px;text-align:center;display:grid;gap:22px;justify-items:center}
.done-wrap h1{font-size:clamp(46px,7vw,84px)}
.tiles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;width:100%}
.tile{border:1px solid var(--line);border-radius:16px;background:var(--surface);padding:14px 8px}
.tile b{display:block;font-family:var(--f-mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);font-weight:500}
.tile span{display:block;font-family:var(--f-display);font-size:42px;line-height:1.1;font-variant-numeric:tabular-nums}
.stamp{width:110px;height:110px;border-radius:50%;background:var(--hl);color:#1a1600;display:grid;place-items:center;font-family:var(--f-display);font-size:46px;transform:rotate(-8deg);box-shadow:var(--shadow)}
#confetti{position:fixed;inset:0;pointer-events:none;z-index:70;width:100%;height:100%}

/* ---------- Functions library ---------- */
.lib{padding-block:30px 80px;display:grid;grid-template-columns:280px minmax(0,1fr);gap:26px;align-items:start}
@media (max-width:860px){ .lib{grid-template-columns:minmax(0,1fr)} }
.lib-list{position:sticky;top:80px;background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:10px;max-height:calc(100vh - 110px);overflow:auto}
@media (max-width:860px){ .lib-list{position:static;max-height:none} }
.lib-search{width:100%;border:1px solid var(--line-strong);border-radius:10px;padding:9px 12px;background:var(--paper);margin-bottom:8px}
.lib-cat{font-family:var(--f-mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--faint);padding:10px 8px 4px}
.lib-fn{display:flex;justify-content:space-between;width:100%;border:0;background:transparent;text-align:left;padding:7px 9px;border-radius:8px;font-family:var(--f-mono);font-size:13px}
.lib-fn:hover{background:var(--surface-2)}
.lib-fn.on{background:var(--ink);color:var(--paper)}
.lib-fn small{font-family:var(--f-ui);color:var(--faint)}
.lib-main h1{font-size:clamp(48px,7vw,92px);font-family:var(--f-mono);letter-spacing:-.04em;font-weight:500}
.lib-main .sig{font-family:var(--f-mono);font-size:15px;background:var(--surface);border:1px solid var(--line);padding:12px 14px;border-radius:12px;overflow-wrap:anywhere}
.lib-main .args{display:grid;gap:8px;margin:14px 0 22px}
.lib-main .arg{display:grid;grid-template-columns:180px minmax(0,1fr);gap:12px;font-size:14.5px;padding:10px 0;border-bottom:1px dashed var(--line)}
@media (max-width:560px){ .lib-main .arg{grid-template-columns:minmax(0,1fr);gap:2px} }
.lib-main .arg code{background:none;padding:0;color:var(--accent)}

/* ---------- Overlays ---------- */
.scrim{position:fixed;inset:0;z-index:80;background:rgba(8,10,14,.5);display:grid;place-items:start center;padding:12vh 16px 16px;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px));animation:fadein .15s ease}
.scrim.center{place-items:center;padding-top:16px}
@keyframes fadein{from{opacity:0}}
.palette{width:min(620px,100%);background:var(--surface);border:1px solid var(--line-strong);border-radius:18px;box-shadow:0 30px 80px -20px rgba(0,0,0,.5);overflow:hidden;animation:popin .18s cubic-bezier(.2,.8,.2,1)}
@keyframes popin{from{transform:translateY(8px) scale(.98)}}
.palette input{width:100%;border:0;border-bottom:1px solid var(--line);padding:16px 18px;font-size:17px;background:transparent;outline:none}
.palette ul{list-style:none;margin:0;padding:6px;max-height:min(420px,60vh);overflow:auto}
.palette li button{display:flex;align-items:center;gap:12px;width:100%;border:0;background:transparent;text-align:left;padding:10px 12px;border-radius:10px;font-size:14.5px}
.palette li button[aria-selected="true"]{background:var(--accent-soft)}
.palette .grp{font-family:var(--f-mono);font-size:10.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--faint);padding:8px 12px 4px}
.palette .k{margin-left:auto;font-family:var(--f-mono);font-size:11.5px;color:var(--faint)}
.palette .foot{display:flex;gap:14px;padding:9px 14px;border-top:1px solid var(--line);font-family:var(--f-mono);font-size:11px;color:var(--faint)}
.modal{width:min(560px,100%);max-height:calc(100% - 24px);overflow:auto;background:var(--surface);border-radius:24px;box-shadow:0 30px 80px -20px rgba(0,0,0,.5);padding:28px;position:relative;animation:popin .2s cubic-bezier(.2,.8,.2,1)}
.modal h2{font-size:40px;margin:8px 0 8px}
.modal .lead{color:var(--muted);margin:0 0 18px}
.modal .x{position:absolute;top:12px;right:12px}
.feat{list-style:none;padding:0;margin:0 0 18px;display:grid;gap:8px;font-size:14.5px}
.feat li{display:flex;gap:10px;align-items:flex-start}.feat svg{color:var(--good);margin-top:2px}
.plans{display:grid;gap:10px;margin-bottom:16px}
.plan{display:flex;align-items:center;gap:12px;border:2px solid var(--line);border-radius:16px;padding:14px 16px;cursor:pointer;position:relative}
.plan input{accent-color:var(--accent);width:18px;height:18px}
.plan:has(input:checked){border-color:var(--ink)}
.plan .pn{font-weight:700}.plan .pd{font-size:13px;color:var(--muted)}
.plan .pp{margin-left:auto;text-align:right;font-family:var(--f-display);font-size:30px;line-height:1;font-variant-numeric:tabular-nums}
.plan .pp small{display:block;font-family:var(--f-ui);font-size:12px;color:var(--muted)}
.plan .save{position:absolute;top:-10px;left:14px;background:var(--hl);color:#1a1600;font-family:var(--f-mono);font-size:11px;padding:2px 8px;border-radius:6px}
.modal .full{width:100%;padding:14px}
.fineprint{font-size:12px;color:var(--faint);text-align:center;margin:10px 0 0}
.ob-opts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:18px 0}
@media (max-width:480px){ .ob-opts{grid-template-columns:minmax(0,1fr)} }
.ob-opt{border:2px solid var(--line);border-radius:16px;background:var(--surface);padding:14px 16px;text-align:left;display:grid;gap:3px}
.ob-opt:hover{border-color:var(--line-strong)}
.ob-opt[aria-pressed="true"]{border-color:var(--ink);background:var(--surface-2)}
.ob-opt b{font-size:15.5px}.ob-opt small{color:var(--muted);font-size:13px}
.ob-steps{display:flex;gap:6px}.ob-steps i{width:28px;height:4px;border-radius:9px;background:var(--line)}.ob-steps i.on{background:var(--ink)}
.toast{position:fixed;left:50%;bottom:calc(100px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);z-index:90;background:var(--ink);color:var(--paper);padding:10px 16px;border-radius:12px;font-size:14px;font-weight:500;box-shadow:var(--shadow);max-width:calc(100% - 32px);animation:popin .2s ease}
::view-transition-old(root),::view-transition-new(root){animation-duration:.22s}
@media (prefers-reduced-motion: reduce){ *,*::before,*::after{animation:none!important;transition:none!important} ::view-transition-old(root),::view-transition-new(root){animation:none} }

/* ---------- Landing motion: everything moves like a spreadsheet ---------- */
:root{interpolate-size:allow-keywords;--ease:cubic-bezier(.2,.8,.2,1);--ease-io:cubic-bezier(.65,0,.35,1);--spring:cubic-bezier(.3,1.6,.5,1)}
@supports (animation-timeline: scroll()){
  .lnav::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:0 50%;animation:progress linear both;animation-timeline:scroll(root)}
  @keyframes progress{to{transform:scaleX(1)}}
}
/* Hero headline: words land, then the cell selection draws around “using” */
.w{display:inline-block}
.hero h1 .w{animation:wordin .95s var(--ease) backwards;animation-delay:calc(var(--i) * 80ms + 120ms)}
.hero h1 .cellmark::before{animation:cellbox .75s var(--ease-io) 1s backwards}
.hero h1 .cellmark::after{animation:handlepop .5s var(--spring) 1.65s backwards,hpulse2 2.6s ease-in-out 2.4s infinite}
@keyframes wordin{from{opacity:0;transform:translateY(.45em) rotate(2.5deg);filter:blur(8px)}}
@keyframes cellbox{from{clip-path:inset(0 100% 0 0)}}
@keyframes handlepop{from{transform:scale(0)}}
@keyframes hpulse2{0%,100%{transform:scale(1)}50%{transform:scale(1.35)}}
.fade{animation:fadeup .9s var(--ease) backwards;animation-delay:var(--d,0ms)}
@keyframes fadeup{from{opacity:0;transform:translateY(16px)}}
.demoin{animation:demoin 1.15s var(--ease) .45s backwards}
@keyframes demoin{from{opacity:0;transform:translateY(34px) rotate(1.4deg) scale(.97)}}
.demo{position:relative}
.demo::after{content:"";position:absolute;inset:0;border-radius:inherit;padding:1.5px;background:radial-gradient(240px circle at var(--mx,-400px) var(--my,-400px),var(--accent),transparent 70%);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none;z-index:5}
.demo-top .live i{animation:livepulse 1.8s ease-out infinite}
@keyframes livepulse{0%{box-shadow:0 0 0 0 color-mix(in srgb,var(--good) 55%,transparent)}100%{box-shadow:0 0 0 8px transparent}}
.fcaret{display:inline-block;width:2px;height:1.1em;background:var(--accent);vertical-align:-.18em;margin-left:1px;animation:caret 1s steps(1) infinite}
@keyframes caret{50%{opacity:0}}
.cell.hlin{animation:hlin .45s var(--ease) backwards}
@keyframes hlin{from{background:var(--surface);box-shadow:none}}
.a-pop{animation:apop .5s var(--spring)}
@keyframes apop{from{transform:scale(.82) translateY(4px);opacity:.35}}
.a-shake{animation:ashake .45s ease}
@keyframes ashake{20%,60%{transform:translateX(-6px)}40%,80%{transform:translateX(6px)}}
.a-swap{animation:fadeup .4s var(--ease)}
.a-ok{animation:aok 1.2s ease}
@keyframes aok{from{background:var(--good-soft)}}
.demo-result .val{transform-origin:left 70%}
/* The page is a grid: a live selection wanders it, and follows your cursor */
.hero{position:relative}
.hero > .wrap{position:relative;z-index:1}
.hero-bg{position:absolute;inset:0;overflow:hidden;pointer-events:none;z-index:0}
.gsel{position:absolute;left:0;top:0;width:33px;height:33px;border:2px solid var(--accent);background:var(--sel);border-radius:2px;opacity:0;transition:left .8s var(--ease-io),top .8s var(--ease-io),width .8s var(--ease-io),height .8s var(--ease-io),opacity .5s}
.gsel.on{opacity:.8}
.gsel.track{transition-duration:.13s,.13s,.13s,.13s,.3s}
.gsel::after{content:"";position:absolute;right:-5px;bottom:-5px;width:8px;height:8px;background:var(--accent);border:2px solid var(--paper)}
.gsel em{position:absolute;top:-21px;left:-2px;font-style:normal;font-family:var(--f-mono);font-size:10.5px;background:var(--accent);color:var(--accent-ink);padding:1px 6px;border-radius:4px 4px 4px 0;white-space:nowrap}
.gsel .gv{position:absolute;left:6px;top:50%;transform:translateY(-50%);font-family:var(--f-mono);font-size:12px;color:var(--accent);white-space:nowrap}
.mob{display:none}
@media (max-width:900px){ .dsk{display:none} .mob{display:inline} }
/* Formula ticker */
.ticker{border-block:1px solid var(--line);background:var(--surface);overflow:hidden;padding-block:13px;-webkit-mask:linear-gradient(90deg,transparent,#000 7%,#000 93%,transparent);mask:linear-gradient(90deg,transparent,#000 7%,#000 93%,transparent)}
.ticker .tk{display:flex;align-items:center;width:max-content;font-family:var(--f-mono);font-size:14px;white-space:nowrap;animation:tick 70s linear infinite}
.ticker .tk > *{padding-right:26px}
.ticker i{color:var(--faint);font-style:normal}
.ticker:hover .tk{animation-play-state:paused}
@keyframes tick{to{transform:translateX(-50%)}}
/* Section headlines: words rise as they arrive */
.split.play .w{animation:wordin .85s var(--ease) backwards;animation-delay:calc(var(--i) * 60ms)}
/* Video vs doing: the old way gets crossed out, the new way gets ticked */
.vs .old li .stk{background:linear-gradient(var(--faint),var(--faint)) no-repeat 0 58% / 0% 1.5px;-webkit-box-decoration-break:clone;box-decoration-break:clone;transition:background-size .55s var(--ease-io)}
.vs.play .old li .stk{background-size:100% 1.5px;transition-delay:calc(var(--i) * 240ms + 700ms)}
.vs.play .new li svg path{stroke-dasharray:24;animation:draw .55s ease backwards;animation-delay:calc(var(--i) * 170ms + 350ms)}
@keyframes draw{from{stroke-dashoffset:24}}
.vs.play .new{animation:liftin .9s var(--ease) .15s backwards}
@keyframes liftin{from{transform:translateY(22px) rotate(-.6deg);opacity:.4}}
.player .bar span{transition:width 1s linear}
/* How it works cards */
.stepcard{transition:transform .35s var(--ease),box-shadow .35s}
.stepcard:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.steps3.play .stepcard{animation:fadeup .8s var(--ease) backwards}
.steps3.play .stepcard:nth-child(2){animation-delay:.12s}.steps3.play .stepcard:nth-child(3){animation-delay:.24s}
.vignette .fxl{min-height:34px}
.argon{text-decoration:underline;text-underline-offset:3px;color:var(--accent)}
.vignette .msgb{transition:background .3s}
.steps3.play .streak i{transform-origin:bottom;animation:barup .55s var(--spring) backwards;animation-delay:calc(var(--i) * 110ms + 450ms)}
@keyframes barup{from{transform:scaleY(.1);opacity:.25}}
.steps3.play .st3msg{animation:fadeup .6s var(--ease) 1.3s backwards}
/* Curriculum: a selection cascades through the cells like a fill-down */
.steps3 .stepcard,.map .l{position:relative}
.map.play .u{animation:uin .65s var(--ease) backwards;animation-delay:calc(var(--r) * 120ms)}
@keyframes uin{from{opacity:0;transform:translateX(-18px)}}
.map.play .l{animation:cellin .6s var(--ease) backwards;animation-delay:calc(var(--r) * 120ms + var(--c) * 75ms + 80ms)}
@keyframes cellin{0%{opacity:0;transform:translateY(-8px);box-shadow:inset 0 0 0 2px var(--accent);background:var(--sel)}60%{opacity:1;box-shadow:inset 0 0 0 2px var(--accent);background:var(--sel)}}
.map .l{transition:border-color .15s,background .15s}
.map .l:hover{border-color:var(--accent);background:var(--sel)}
.map .l:hover::after{content:"";position:absolute;right:-5px;bottom:-5px;width:8px;height:8px;background:var(--accent);border:2px solid var(--paper)}
/* Teams */
.teams{position:relative;overflow:hidden;isolation:isolate}
.teams > *{position:relative;z-index:1}
.teams::before{content:"";position:absolute;width:60%;height:120%;left:-20%;top:-30%;background:radial-gradient(closest-side,color-mix(in srgb,var(--hl) 22%,transparent),transparent);animation:drift 16s ease-in-out infinite alternate;pointer-events:none;z-index:0}
@keyframes drift{to{transform:translate(130%,25%)}}
.teams.play .meter span{transform-origin:left;animation:grow 1.2s var(--ease) backwards;animation-delay:calc(var(--i) * 140ms + 300ms)}
@keyframes grow{from{transform:scaleX(0)}}
/* Pricing */
.pcard{transition:transform .45s var(--ease),box-shadow .3s;will-change:transform}
.pcard::after{content:"";position:absolute;inset:0;border-radius:inherit;background:radial-gradient(320px circle at var(--mx,50%) var(--my,0%),color-mix(in srgb,var(--hl) 16%,transparent),transparent 60%);opacity:0;transition:opacity .3s;pointer-events:none}
.pcard:hover::after{opacity:1}
.pcard:hover{box-shadow:var(--shadow)}
.pricing.play .pcard{animation:fadeup .8s var(--ease) backwards}
.pricing.play .pcard:nth-child(2){animation-delay:.1s}.pricing.play .pcard:nth-child(3){animation-delay:.2s}
.pricing.play .ribbon{animation:swing .8s var(--spring) .6s backwards}
@keyframes swing{from{transform:rotate(-14deg) translateY(-12px);opacity:0}}
.btn[data-magnet]{transition:transform .25s var(--ease)}
/* FAQ opens smoothly where supported */
@supports selector(::details-content){
  .faq details::details-content{block-size:0;overflow:clip;transition:block-size .4s var(--ease),content-visibility .4s allow-discrete}
  .faq details[open]::details-content{block-size:auto}
}
/* Final CTA: a highlighter sweeps under the promise */
.hlsweep{background:linear-gradient(color-mix(in srgb,var(--hl) 75%,transparent),color-mix(in srgb,var(--hl) 75%,transparent)) no-repeat 0 88% / 0% 36%;padding:0 .05em;-webkit-box-decoration-break:clone;box-decoration-break:clone;transition:background-size 1.1s var(--ease-io) .35s}
.bigcta.play .hlsweep{background-size:100% 36%}
@media (prefers-reduced-motion: reduce){ .lnav::after,.gsel,.teams::before,.demo::after{display:none} .ticker .tk{animation:none!important} }

/* ---------- Data tools ---------- */
.cell.thead{justify-content:space-between;gap:6px}
.cell.thead span{overflow:hidden;text-overflow:ellipsis}
.thbtn{border:1px solid var(--line-strong);background:var(--surface);border-radius:6px;width:22px;height:22px;display:grid;place-items:center;font-size:11px;padding:0;color:var(--muted);flex:none;line-height:1}
.thbtn:hover,.thbtn.open{border-color:var(--accent);color:var(--accent)}
.thbtn.filt,.thbtn.sorted{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.cell.rh.fnum{color:var(--accent);font-weight:700}
.ttool{padding:10px 14px;border-bottom:1px solid var(--line);display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.tpanel{border-bottom:1px solid var(--line);padding:12px 14px;display:grid;gap:10px;background:var(--head)}
.tp-h{display:flex;align-items:center;gap:10px}.tp-h .iconbtn{margin-left:auto;width:30px;height:30px}
.tp-row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.tp-row .btn.on{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}
.tp-in{width:110px;border:1px solid var(--line-strong);border-radius:9px;padding:7px 10px;background:var(--surface)}
.tp-lab{font-size:13.5px;color:var(--muted)}
.tp-checks{display:flex;gap:6px 16px;flex-wrap:wrap;align-items:center}
.tchk{display:inline-flex;gap:6px;align-items:center;font-size:14px;cursor:pointer}
.tchk input{accent-color:var(--accent);width:16px;height:16px}
.cf-form{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px;align-items:end}
.cf-form label{display:grid;gap:4px;font-size:12.5px;color:var(--muted);font-weight:500}
.cf-form select,.cf-form input,.ch-data select{border:1px solid var(--line-strong);border-radius:9px;padding:8px 10px;background:var(--surface);font-size:14px;color:var(--ink);min-width:0;width:100%}
.cf-rules{list-style:none;margin:0;padding:0;display:grid;gap:6px}
.cf-rules li{display:flex;gap:10px;align-items:center;font-size:14px;background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:6px 10px;flex-wrap:wrap}
.cf-rules .btn-link{margin-left:auto}
.cfsw{width:18px;height:18px;border-radius:5px;flex:none}
.cell.cf-green,.cfsw.cf-green{background:color-mix(in srgb,var(--good) 24%,var(--surface));color:var(--good);font-weight:600}
.cell.cf-red,.cfsw.cf-red{background:color-mix(in srgb,var(--bad) 22%,var(--surface));color:var(--bad);font-weight:600}
.cell.cf-yellow,.cfsw.cf-yellow{background:color-mix(in srgb,var(--hl) 60%,var(--surface));font-weight:600}
.cell.cf-green,.cell.cf-red,.cell.cf-yellow{animation:hlin .4s var(--ease, ease) backwards}
.pv{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);border-bottom:1px solid var(--line)}
@media (max-width:760px){ .pv{grid-template-columns:minmax(0,1fr)} .pv-left{border-right:0!important;border-bottom:1px solid var(--line)} }
.pv-left{padding:14px;border-right:1px solid var(--line);display:grid;gap:12px;align-content:start;background:var(--head)}
.pv-flist{display:flex;flex-wrap:wrap;gap:6px;margin-top:6px}
.pv-field{border:1px solid var(--line-strong);background:var(--surface);border-radius:8px;padding:5px 10px;font-size:13.5px;font-weight:600;cursor:grab}
.pv-field.used{opacity:.5}.pv-field.on{border-color:var(--accent);color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.pv-pick{display:flex;gap:6px;flex-wrap:wrap;align-items:center;font-size:13.5px}
.pv-areas{display:grid;gap:8px}
.pv-area{border:1.5px dashed var(--line-strong);border-radius:12px;padding:8px 10px;display:grid;gap:6px;min-height:58px;background:var(--surface);transition:border-color .15s,background .15s}
.pv-area.over{border-color:var(--accent);background:var(--sel)}
.pv-empty{font-size:12.5px;color:var(--faint)}
.pv-chip{display:inline-flex;align-items:center;gap:6px;background:var(--accent-soft);border-radius:8px;padding:4px 4px 4px 10px;font-size:13.5px;max-width:100%;flex-wrap:wrap;justify-self:start}
.pv-chip select{border:1px solid var(--line-strong);border-radius:7px;padding:2px 4px;background:var(--surface);font-size:13px;color:var(--ink)}
.pv-x{border:0;background:transparent;width:26px;height:26px;display:grid;place-items:center;color:var(--muted);padding:0;border-radius:6px}
.pv-x:hover{background:var(--surface)}
.pv-x .ico{width:13px;height:13px}
.pv-out{padding:14px;min-width:0}
.pv-ph{border:1.5px dashed var(--line);border-radius:12px;padding:30px 16px;text-align:center;color:var(--muted);font-size:14px}
.pvt-wrap{overflow-x:auto}
.pvt{border-collapse:collapse;font-family:var(--f-mono);font-size:13px;min-width:100%;animation:fadeup .35s ease}
.pvt th,.pvt td{border:1px solid var(--line);padding:6px 10px;text-align:right;white-space:nowrap}
.pvt th:first-child,.pvt thead tr:first-child th{text-align:left}
.pvt thead th{background:var(--accent-soft);font-family:var(--f-ui);font-weight:600}
.pvt tbody th{font-weight:500;font-family:var(--f-ui)}
.pvt tr.gt th,.pvt tr.gt td,.pvt td.gt{font-weight:700;background:var(--surface-2)}
.pv-src{border-bottom:1px solid var(--line)}
.pv-src summary{padding:10px 14px;cursor:pointer;font-size:13.5px;color:var(--muted)}
.ch{display:grid;grid-template-columns:auto minmax(0,1fr);border-bottom:1px solid var(--line);background:var(--head)}
.ch-types{display:grid;grid-template-columns:repeat(4,76px);gap:8px;padding:14px 14px 0}
.ch-type{display:grid;justify-items:center;gap:4px;border:1.5px solid var(--line-strong);background:var(--surface);border-radius:12px;padding:9px 4px;font-size:12.5px;font-weight:600}
.ch-type svg{width:24px;height:24px;color:var(--muted)}
.ch-type.on{border-color:var(--accent);background:var(--accent-soft);color:var(--accent)}.ch-type.on svg{color:var(--accent)}
.ch-data{display:grid;grid-template-columns:auto minmax(0,1fr);gap:8px 10px;align-items:center;padding:14px 14px 0;font-size:12.5px;color:var(--muted);align-content:start}
.ch-out{grid-column:1 / -1;padding:14px;min-width:0;background:var(--surface);margin-top:14px;border-top:1px solid var(--line)}
@media (max-width:860px){ .ch{grid-template-columns:minmax(0,1fr)} .ch-types{grid-template-columns:repeat(4,minmax(0,1fr))} }
.chart{width:100%;height:auto;display:block;animation:fadeup .4s ease}
.chart .ax{stroke:var(--line-strong)}.chart .gl{stroke:var(--line)}
.chart text{fill:var(--muted);font-family:var(--f-mono);font-size:13px}
.chart .bar{fill:var(--accent)}.chart .ln{stroke:var(--accent);stroke-width:3;fill:none;stroke-linejoin:round}.chart .dot{fill:var(--surface);stroke:var(--accent);stroke-width:2.5}
.chart .lbl{fill:var(--ink);font-family:var(--f-ui);font-size:15px}
/* ---------- Practice ---------- */
.practice{padding-block:28px 80px}
.pgrid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
@media (max-width:820px){ .pgrid{grid-template-columns:minmax(0,1fr)} }
.pcard2{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:22px;display:grid;gap:10px;align-content:start;justify-items:start}
.pcard2 h2{font-size:36px}
.pcard2 p{margin:0;color:var(--muted)}
.pcard2.daily{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.pcard2.daily p,.pcard2.daily .eyebrow{color:color-mix(in srgb,var(--paper) 72%,transparent)}
.pcard2.wide{grid-column:1 / -1}
.pcard2.test{background:var(--hl-soft);border-color:color-mix(in srgb,var(--hl) 55%,var(--line))}
.pchips{display:flex;gap:6px;flex-wrap:wrap}
.pchip{border:1px solid var(--line-strong);background:var(--surface);border-radius:99px;padding:5px 11px;font-family:var(--f-mono);font-size:12.5px;color:var(--ink)}
.pchip.on{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.pchip.new:not(.on){color:var(--faint)}
.weak{margin-top:30px}.weak h2{font-size:32px;margin-bottom:12px}
.mrow.wk{grid-template-columns:110px minmax(0,1fr) 40px auto;font-size:14px}
.daily-card{background:var(--ink);color:var(--paper);border-color:var(--ink)}.daily-card h3{color:var(--paper)}.daily-card h3 .eyebrow{color:color-mix(in srgb,var(--paper) 65%,transparent)}.daily-card p{margin:0 0 12px;font-size:14px;opacity:.82}
.ttimer{font-family:var(--f-mono);font-weight:600;font-size:15px;padding:5px 10px;border-radius:9px;background:var(--surface);border:1px solid var(--line);min-width:64px;text-align:center;font-variant-numeric:tabular-nums}
.ttimer.low{background:var(--bad-soft);color:var(--bad);border-color:var(--bad)}
.testdone{padding-block:40px 80px;max-width:880px}
.td-head{display:flex;gap:24px;align-items:center;flex-wrap:wrap;margin-bottom:22px}
.td-head h1{font-size:clamp(42px,6vw,72px)}.td-head p{color:var(--muted);margin:6px 0 0;max-width:56ch}
.td-weak{margin-bottom:18px;display:grid;gap:10px;justify-items:start}
.td-list{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.td-list li{display:grid;grid-template-columns:30px minmax(0,1fr);gap:12px;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:14px}
.td-mark{width:26px;height:26px;border-radius:50%;display:grid;place-items:center}
.td-list li.ok .td-mark{background:var(--good);color:#fff}.td-list li.no .td-mark{background:var(--bad);color:#fff}
.td-mark .ico{width:14px;height:14px}
.td-q{font-size:14px;color:var(--muted);margin:2px 0 6px}
.td-f{font-size:13.5px;display:flex;gap:6px;flex-wrap:wrap;align-items:center;overflow-wrap:anywhere}
.td-f code{background:var(--surface-2);padding:2px 6px;border-radius:6px}
.td-why{font-size:13.5px;margin-top:6px;color:var(--muted)}
.td-acts{display:flex;gap:10px;flex-wrap:wrap;margin-top:22px}
.tag-proj{background:var(--accent-soft);color:var(--accent)}

.footer .flinks{display:flex;gap:16px;flex-wrap:wrap}
/* ---------- Accounts ---------- */
.avatar{width:34px;height:34px;border-radius:50%;border:0;background:var(--ink);color:var(--paper);font-weight:700;font-size:14px;display:grid;place-items:center;padding:0;cursor:pointer;flex:none}
.avatar:hover{box-shadow:0 0 0 3px var(--accent-soft)}
.modal.au{width:min(460px,100%)}
.modal.au h2{font-size:34px;overflow-wrap:anywhere}
.au-form{display:grid;gap:10px;margin:6px 0 10px}
.au-in{border:1px solid var(--line-strong);border-radius:12px;padding:12px 14px;font-size:16px;background:var(--surface);color:var(--ink);width:100%;box-sizing:border-box}
.au-in:focus{outline:2px solid var(--accent);outline-offset:1px;border-color:var(--accent)}
.au-in.mono{font-family:var(--f-mono);letter-spacing:.3em;text-align:center;font-size:22px}
.au-google{display:flex;gap:10px;align-items:center;justify-content:center;margin-bottom:4px}
.au-or{display:flex;align-items:center;gap:12px;color:var(--faint);font-size:13px;margin:10px 0}
.au-or::before,.au-or::after{content:"";flex:1;height:1px;background:var(--line)}
.au-msg{font-size:14px;color:var(--muted);margin:6px 0}
.au-msg.err{color:var(--bad)}
.au-plan{display:grid;gap:2px;background:var(--surface-2);border:1px solid var(--line);border-radius:14px;padding:14px 16px;margin:10px 0 16px}
.au-plan span{color:var(--muted);font-size:14px}
.au-acts{display:flex;gap:10px;flex-wrap:wrap}
.modal .fineprint a{color:inherit}
@media (max-width:560px){ .abar .cmdk .kbd{display:none} }
@media (max-width:420px){ .abar .right [data-act="theme"]{display:none} .avatar{width:30px;height:30px;font-size:13px} .lnav .right{gap:6px} }
.au-form .tp-lab{margin-top:4px}
.au-switch{font-size:14px;color:var(--muted);margin:10px 0 0;text-align:center}
.au-switch .btn-link{font-size:14px}

/* ---------- Static pages: function guides, hub, legal ---------- */
.spage main{min-height:60vh}
.fpage{max-width:820px;padding-block:28px 80px}
.fpage h1{font-size:clamp(44px,7vw,80px);margin:10px 0 14px}
.fpage h2{font-size:34px;margin:44px 0 14px}
.fpage h3{font-family:var(--f-ui);font-weight:600;font-size:16px;letter-spacing:0;margin:0 0 6px}
.fpage p,.fpage li{font-size:16.5px}
.fpage code{font-family:var(--f-mono);font-size:.92em;background:var(--surface-2);padding:2px 6px;border-radius:6px;overflow-wrap:anywhere}
.fpage a:not(.btn){color:var(--accent)}
.fp-lead{font-size:20px!important;color:var(--muted);margin:0 0 8px;max-width:60ch}
.crumbs{display:flex;gap:8px;font-size:13.5px;color:var(--muted);margin-bottom:22px;flex-wrap:wrap}
.crumbs a{color:var(--muted)!important;text-decoration:none}.crumbs a:hover{color:var(--ink)!important}
.fpage .sig{font-family:var(--f-mono);font-size:16px;background:var(--surface);border:1px solid var(--line);padding:14px 16px;border-radius:12px;overflow-wrap:anywhere}
.fpage .sig .tk-fn{color:var(--accent);font-weight:600}
.fp-demo{margin:0}
.fp-demo .fxmirror.static{position:static}
.fp-demo .gridscroll{overflow-x:auto}
.fp-try{display:flex;gap:14px;align-items:center;flex-wrap:wrap;margin:18px 0 0}
.fp-try span{color:var(--muted);font-size:14.5px!important}
.fp-mist{display:grid;gap:12px}
.fp-m{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:16px 18px}
.fp-m p{margin:4px 0 0;color:var(--muted);font-size:15px!important}
.fp-m p b.bad{color:var(--bad)}
.fpage .faq{display:block}
.fp-cta{margin-top:48px;background:var(--ink);color:var(--paper);border-radius:24px;padding:28px;display:flex;gap:20px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.fp-cta h2{margin:0 0 6px;color:var(--paper)}
.fp-cta p{margin:0;opacity:.8;max-width:52ch;font-size:15.5px!important}
.fp-rel{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:10px}
.fp-rel a{display:grid;gap:2px;text-decoration:none;color:var(--ink)!important;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:12px 14px;height:100%;box-sizing:border-box;transition:border-color .15s,transform .15s}
.fp-rel a:hover{border-color:var(--accent);transform:translateY(-2px)}
.fp-rel b{font-family:var(--f-mono);font-weight:600;color:var(--accent)}
.fp-rel span{font-size:14px;color:var(--muted)}
.hub{max-width:1100px}
.hub section h2{margin-top:36px}
.legal h2{font-size:28px;margin-top:34px}
.legal p,.legal li{color:var(--muted)}
.fpage .args{display:grid;gap:8px;margin:14px 0 0}
.fpage .arg{display:grid;grid-template-columns:180px minmax(0,1fr);gap:12px;font-size:15px;padding:10px 0;border-bottom:1px dashed var(--line)}
.fpage .arg code{background:none;padding:0;color:var(--accent)}
@media (max-width:560px){ .fpage .arg{grid-template-columns:minmax(0,1fr);gap:2px} }
.fpage.wide{max-width:1100px}
.fx-inline{font-family:var(--f-mono);background:var(--surface-2);padding:3px 8px;border-radius:7px;overflow-wrap:anywhere}
.fp-res{font-family:var(--f-mono);font-weight:600;color:var(--good);white-space:nowrap}
.fp-note{color:var(--muted);font-size:14.5px!important;margin:22px 0 8px}
.fpage .gridscroll{border:1px solid var(--line);border-radius:14px;overflow-x:auto;background:var(--surface)}
.fp-tip{background:var(--hl-soft);border:1px solid color-mix(in srgb,var(--hl) 50%,var(--line));border-radius:14px;padding:14px 16px;margin-top:22px}
.fp-also{margin:10px 0 0;font-size:15px!important}
.fp-list{padding-left:20px;display:grid;gap:8px}
.err-code{font-family:var(--f-mono);font-size:clamp(40px,8vw,72px);font-weight:600;color:var(--bad);background:var(--bad-soft);border-radius:18px;padding:18px 26px;display:inline-block;margin:10px 0 4px}
.pt-wrap{overflow-x:auto;margin:16px 0;border:1px solid var(--line);border-radius:14px;background:var(--surface)}
.pt,.cmp,.cs{border-collapse:collapse;width:100%;font-size:14.5px}
.pt th,.pt td{border-bottom:1px solid var(--line);border-right:1px solid var(--line);padding:7px 10px;text-align:left;font-family:var(--f-mono);font-size:13.5px;white-space:nowrap}
.pt thead th,.pt tbody th{background:var(--head);color:var(--muted);font-weight:500;text-align:center}
.pt td.n{text-align:right}.pt td.h{font-family:var(--f-ui);font-weight:600;background:var(--surface-2)}
.cmp th,.cmp td,.cs th,.cs td{border-bottom:1px solid var(--line);padding:11px 14px;text-align:left;vertical-align:top}
.cmp thead th,.cs thead th{background:var(--head);font-weight:600;font-size:13.5px;color:var(--muted)}
.cmp tbody th,.cs tbody th{font-weight:600;white-space:nowrap}
.cs td.n{font-family:var(--f-mono);white-space:nowrap}
.cs kbd{font-family:var(--f-mono);font-size:13px;background:var(--surface-2);border:1px solid var(--line-strong);border-bottom-width:2px;border-radius:6px;padding:2px 7px;white-space:nowrap}
.pq{display:grid;gap:12px;padding-left:24px;margin:8px 0 26px}
.pq li p{margin:0 0 6px}
.pq details{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:10px 14px}
.pq summary{cursor:pointer;font-weight:600;font-size:14px;color:var(--accent)}
.pq details p{margin:8px 0 0}
.hub-top{margin:20px 0 10px}
@media print{ .lnav,.footer,.fp-cta,.fp-try{display:none!important} .fpage{max-width:none;padding:0} }