/* AXIS Desk — AMT Fundamentals. Tokens copied from axisdesk.org so the lessons read as the site. Dark only, by design. */
:root{
  --ground:#0B0E11; --surface:#12161B; --surface-2:#171C22; --rule:#232A32; --rule-2:#2E3640;
  --ink:#E7ECF0; --muted:#8B97A3; --dim:#5A646E; --green:#45A876; --red:#BE3A40; --amber:#B9842C; --amber-2:#D9A857;
  --va:#4F6577; --out:#2A323B;
  --display:"Archivo Narrow","Bahnschrift","Segoe UI",system-ui,sans-serif;
  --body:"Archivo","Segoe UI",system-ui,-apple-system,sans-serif;
  --mono:Consolas,"Cascadia Code","JetBrains Mono",ui-monospace,monospace;
  color-scheme:dark;
}
*{box-sizing:border-box}
html{background:var(--ground)}
body{margin:0;background:var(--ground);color:var(--ink);font-family:var(--body);font-size:17px;line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:var(--amber-2)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--amber-2);outline-offset:2px}
.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:5;background:rgba(11,14,17,.9);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:1px solid var(--rule)}
.top .in{max-width:880px;margin:0 auto;padding:0 16px;height:54px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.brand{font-family:var(--display);font-weight:700;letter-spacing:.2em;text-decoration:none;color:var(--ink);font-size:.95rem;white-space:nowrap}
.brand span{color:var(--amber-2)}
.crumb{font-family:var(--mono);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);text-decoration:none}
main{max-width:880px;margin:0 auto;padding-inline:16px;padding-block:40px 64px}
.lbl{font-family:var(--mono);font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
h1,h2,h3{font-family:var(--display);font-weight:700;letter-spacing:-.01em;line-height:1.08;margin:0;text-wrap:balance}
h1{font-size:clamp(2.2rem,6vw,3.6rem);margin-top:10px}
h2{font-size:1.65rem;margin:44px 0 12px}
h3{font-size:1.2rem;margin:0 0 6px}
p{margin:0 0 14px;max-width:68ch}
.lead{font-size:1.2rem;color:#C9D2DA;margin-top:16px;max-width:60ch}
.oneline{margin:28px 0 0;padding:16px 18px;border-left:3px solid var(--amber-2);background:var(--surface);border-radius:0 8px 8px 0;max-width:68ch}
.oneline b{color:var(--amber-2);font-family:var(--mono);font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;display:block;margin-bottom:4px;font-weight:400}
ul.pts{margin:0 0 14px;padding-left:20px;display:grid;gap:8px;max-width:68ch}
ul.pts b{color:var(--ink)}
.fig{margin:30px 0 8px;background:var(--surface);border:1px solid var(--rule);border-radius:10px;padding:14px 12px 10px;overflow:hidden}
.fig svg{display:block;width:100%;height:auto}
.fig .cap{font-size:.84rem;color:var(--muted);margin:8px 4px 0;max-width:none}
.fig .tag{font-family:var(--mono);font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;color:var(--dim)}
.multi{display:grid;grid-template-columns:1fr;gap:12px}
@media(max-width:620px){.multi{grid-template-columns:1fr}}
.multi .cell{background:var(--surface-2);border:1px solid var(--rule);border-radius:8px;padding:8px}
.multi .cell h3{font-size:1rem;margin:2px 4px 2px}
.multi .cell p{font-size:.84rem;color:var(--muted);margin:2px 4px 6px}
.terms{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:10px;margin-top:6px}
.term{background:var(--surface);border:1px solid var(--rule);border-radius:8px;padding:12px 14px}
.term b{display:block;font-family:var(--display);font-size:1.05rem}
.term span{font-size:.92rem;color:var(--muted)}
.try{margin-top:8px;padding:16px 18px;background:var(--surface-2);border:1px solid var(--rule-2);border-radius:8px;max-width:68ch}
.try p:last-child{margin-bottom:0}
.nav{display:flex;justify-content:space-between;gap:12px;margin-top:48px;padding-top:20px;border-top:1px solid var(--rule);flex-wrap:wrap}
.nav a{text-decoration:none;display:grid;gap:2px;max-width:48%}
.nav a span{font-family:var(--mono);font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.nav a b{font-family:var(--display);font-size:1.1rem;color:var(--ink)}
.nav a.next{text-align:right;margin-left:auto}
.legal{margin-top:36px;font-size:.78rem;color:var(--dim);max-width:none}
.calc{display:grid;gap:14px}
.calc .row{display:flex;gap:16px;flex-wrap:wrap;align-items:end}
.calc label{display:grid;gap:4px;font-size:.84rem;color:var(--muted)}
.calc input,.calc select{background:var(--ground);color:var(--ink);border:1px solid var(--rule-2);border-radius:6px;padding:8px 10px;font:500 1rem var(--mono);width:130px}
.calc .out{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px}
.calc .out div{background:var(--surface-2);border:1px solid var(--rule);border-radius:8px;padding:10px 12px}
.calc .out b{display:block;font:500 1.5rem var(--mono);font-variant-numeric:tabular-nums}
.calc .out span{font-size:.8rem;color:var(--muted)}
table.spec{border-collapse:collapse;width:100%;font-size:.95rem;margin:6px 0 14px}
.tbl{overflow-x:auto}
table.spec th,table.spec td{text-align:left;padding:9px 12px;border-bottom:1px solid var(--rule)}
table.spec th{font-family:var(--mono);font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);font-weight:400}
table.spec td.n{font-family:var(--mono);font-variant-numeric:tabular-nums}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:12px;margin-top:28px}
.card{display:grid;gap:6px;align-content:start;background:var(--surface);border:1px solid var(--rule);border-radius:10px;padding:16px;text-decoration:none;color:var(--ink);transition:border-color .2s}
.card:hover{border-color:var(--amber-2)}
.card .no{font-family:var(--mono);font-size:.72rem;letter-spacing:.14em;color:var(--amber-2)}
.card b{font-family:var(--display);font-size:1.25rem;line-height:1.15}
.card span{font-size:.9rem;color:var(--muted)}
svg text{font-family:var(--mono)}
@media (prefers-reduced-motion:no-preference){.card{transition:border-color .2s}}

/* interactive charts (lwfp.js) */
.lwfp-wrap{margin:2px 0}
.lwfp{position:relative;border:1px solid var(--rule);border-radius:6px;overflow:hidden}
.lwfp table{display:table;overflow:visible;margin:0;width:auto;font-size:inherit;border-collapse:separate}.lwfp td,.lwfp th{padding:0;border:0}
.lwfi{font-family:var(--mono);font-size:.72rem;color:var(--muted);margin:6px 2px 0;min-height:1.2em}