.mhero{max-width:var(--maxw);margin:0 auto;padding:46px 28px 8px}.mhero .eyebrow{display:inline-flex;align-items:center;gap:9px}.mhero .eyebrow:before{content:"";width:24px;height:1.5px;background:var(--teal)}.mhero h1{font-size:clamp(34px,5vw,60px);letter-spacing:-.025em;line-height:1.02;margin:16px 0 0;max-width:18ch}.mhero .lede{font-size:19px;color:var(--ink-72);max-width:60ch;margin:20px 0 0;line-height:1.5}.section{max-width:var(--maxw);margin:0 auto;padding:46px 28px}.section h2{font-size:clamp(26px,3.4vw,38px);letter-spacing:-.02em;line-height:1.08}.section .intro{color:var(--ink-72);font-size:17px;max-width:62ch;margin:12px 0 0;line-height:1.5}.formula{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;margin-top:30px}.weights{display:flex;flex-direction:column;gap:16px}.weight{background:var(--paper-card);border:1px solid var(--line);border-radius:var(--r);padding:18px 20px;box-shadow:var(--sh-sm)}.weight .top{display:flex;align-items:center;gap:13px;margin-bottom:12px}.weight .ic{width:42px;height:42px;border-radius:11px;background:var(--teal-tint);color:var(--teal);display:grid;place-items:center;font-size:20px;flex:none}.weight h3{font-size:18px;flex:1}.weight .pct{font-family:JetBrains Mono,monospace;font-weight:700;font-size:18px;color:var(--teal)}.weight .wbar{height:8px;border-radius:5px;background:var(--paper-deep);overflow:hidden;margin-bottom:10px}.weight .wbar i{display:block;height:100%;border-radius:5px;background:var(--teal)}.weight p{font-size:13.5px;color:var(--ink-72);margin:0;line-height:1.45}.formula-card{background:var(--paper-card);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-md);padding:30px;text-align:center}.formula-card .ringwrap{display:flex;justify-content:center;margin-bottom:18px}.formula-card .eq{font-family:JetBrains Mono,monospace;font-size:13px;color:var(--ink-55);line-height:1.8;text-align:left;background:var(--paper-deep);border-radius:var(--r);padding:16px 18px;margin-top:18px}.formula-card .eq b{color:var(--teal)}.notused{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:26px}.nu{background:var(--paper-card);border:1px solid var(--line);border-radius:var(--r);padding:20px;display:flex;gap:13px;align-items:flex-start}.nu .x{width:30px;height:30px;border-radius:8px;background:#d64b4b1a;color:var(--red);display:grid;place-items:center;font-weight:800;flex:none}.nu h4{font-size:15px;margin:0 0 4px}.nu p{font-size:13.5px;color:var(--ink-72);margin:0;line-height:1.45}.callout{display:grid;grid-template-columns:auto 1fr;gap:20px;align-items:center;background:linear-gradient(180deg,var(--paper-tint),var(--paper-card));border:1px solid rgba(15,92,84,.18);border-radius:var(--r-lg);padding:28px;margin-top:30px}.callout .big{font-family:Fraunces,serif;font-size:23px;line-height:1.35;margin:0}.callout .chip{margin-top:0}.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:28px;counter-reset:s}.flow .f{padding-top:24px;position:relative}.flow .f:before{counter-increment:s;content:"0" counter(s);font-family:JetBrains Mono,monospace;font-size:12px;font-weight:700;color:var(--teal);position:absolute;top:0;left:0}.flow .f h4{font-size:16px;margin:6px 0;padding-top:16px;border-top:2px solid var(--ink)}.flow .f p{font-size:13.5px;color:var(--ink-72);margin:0;line-height:1.45}.midcta{text-align:center;padding:20px 0 0}@media(max-width:820px){.formula,.notused{grid-template-columns:1fr}.flow{grid-template-columns:1fr 1fr}.callout{grid-template-columns:1fr;text-align:center}}#rx-demo .rx-controls{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin-top:14px}#rx-demo .rx-controls button{border:1px solid var(--line-2);background:var(--paper);border-radius:999px;padding:7px 13px;cursor:pointer;font:600 12.5px/1 Hanken Grotesk,sans-serif;color:var(--ink-72)}#rx-demo .rx-controls button.on{background:var(--teal);border-color:var(--teal);color:#fff}#rx-demo .rx-hint{margin-top:10px;text-align:center;color:var(--ink-38);font-size:12px}#rx-arc{transition:stroke-dashoffset .5s cubic-bezier(.4,0,.1,1),stroke .3s}