:root{color-scheme:dark;color:#f8fafc;--bg:#000;--text:#fff;--dim:#999;--accent:#bb86fc;background:#000;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html,body{background:var(--bg);min-height:100%;margin:0}body{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;padding:0;line-height:1.5;overflow-x:hidden}body:before{content:"";pointer-events:none;z-index:-1;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='40' height='40'%3E%3Cpath d='M40 0H0v1h40zM0 0v40h1V0z' fill='rgba(255,255,255,0.08)'/%3E%3C/svg%3E");width:100vw;height:100vh;position:fixed;top:0;left:0;transform:translateZ(0);mask-image:radial-gradient(circle at 50% 30%,#000 0%,#0000 80%)}a{color:inherit;text-decoration:none}a:hover{color:var(--accent)}.embed-card{background:0 0;width:100%;max-width:800px;margin:0 auto;overflow:hidden}.embed-body{padding:2.5rem 2.5rem 5rem}.eyebrow{color:#bb86fc;letter-spacing:.08em;text-transform:uppercase;align-items:center;gap:6px;margin:0 0 8px;font-size:.78rem;font-weight:900;display:inline-flex}h1{letter-spacing:-.04em;text-transform:uppercase;margin:0 0 .5rem;font-size:clamp(2.5rem,6vw,4rem);font-weight:900;line-height:1.05}h2{color:var(--text);letter-spacing:-.01em;align-items:baseline;gap:.5rem;margin:0 0 .75rem;font-size:1.3rem;font-weight:700;display:flex}p{color:#ffffffd9;line-height:1.7}.subtitle{color:var(--dim);letter-spacing:.01em;margin-bottom:2.5rem;font-size:1rem}.section-num{color:var(--accent);font-size:1.3rem;font-weight:900}.input-row{grid-template-columns:minmax(0,1fr) 88px;gap:8px;display:grid}.embed-warning,.embed-footer{border-top:1px solid #ffffff1a}.calculator-layout{grid-template-columns:minmax(0,1fr);gap:2rem;margin:2.5rem 0;display:grid}.calculator-panel{background:#ffffff09;border:1px solid #ffffff1a;border-radius:8px;padding:1.5rem}.calculator-grid{grid-template-columns:minmax(0,1fr);gap:1rem;display:grid}.field-label{letter-spacing:.04em;text-transform:uppercase;color:#ffffffc2;margin-bottom:.5rem;font-size:.82rem;font-weight:700;display:block}.calculator-input,.calculator-select{width:100%;min-height:48px;color:var(--text);font:inherit;background:#00000059;border:1px solid #ffffff1f;border-radius:8px;outline:none;padding:.8rem .9rem}.calculator-select{appearance:none;background-image:linear-gradient(45deg,#0000 50%,#ffffffb8 50%),linear-gradient(135deg,#ffffffb8 50%,#0000 50%);background-position:calc(100% - 18px),calc(100% - 12px);background-repeat:no-repeat;background-size:6px 6px,6px 6px;min-width:96px;padding-right:2.35rem}.calculator-select option{color:#fff;background:#000}.calculator-input:focus,.calculator-select:focus{border-color:var(--accent);box-shadow:0 0 0 3px #bb86fc24}.mode-switch{grid-template-columns:repeat(2,minmax(0,1fr));gap:.5rem;margin-bottom:1rem;display:grid}.mode-button,.calculator-button{min-height:48px;font:inherit;cursor:pointer;border:1px solid #ffffff1f;border-radius:8px;font-weight:700}.mode-button{color:#ffffffb8;background:#ffffff0a}.mode-button.is-active,.calculator-button{background:var(--accent);border-color:var(--accent);color:var(--bg)}.calculator-button{width:100%;margin-top:1rem}.calculator-result{border-top:1px solid #ffffff1a;margin-top:1.25rem;padding-top:1.25rem;display:none}.calculator-result.is-visible{display:block}.syringe-visual{background:#00000038;border:1px solid #ffffff14;border-radius:8px;margin-bottom:1rem;padding:.8rem .25rem .7rem}.syringe-visual svg{width:100%;height:auto;display:block;overflow:visible}.syringe-fill{transition:width .35s}.syringe-note{color:#fff;text-align:center;margin-top:.5rem;font-size:.78rem;line-height:1.4}.result-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:.75rem;display:grid}.result-metric{background:#00000040;border:1px solid #ffffff14;border-radius:8px;padding:1rem}.result-label{color:var(--dim);letter-spacing:.04em;text-transform:uppercase;margin-bottom:.3rem;font-size:.78rem;display:block}.result-value{color:var(--text);letter-spacing:-.03em;align-items:baseline;gap:.35rem;font-size:clamp(1.8rem,5vw,2.7rem);font-weight:900;display:flex}.result-unit{color:#ffffffb8;font-size:.95rem;font-weight:600}.formula-box{color:#ffffffd1;background:#bb86fc12;border:1px solid #bb86fc2e;border-radius:8px;margin-top:1rem;padding:1rem;font-size:.9rem;line-height:1.6}.calculator-error{color:#ffb4b4;margin-top:1rem;font-size:.9rem;display:none}.calculator-error.is-visible{display:block}.embed-warning{color:#ffffffb3;text-align:center;background:#ffffff08;border:1px solid #ffffff14;border-radius:8px;margin-top:0;padding:1.25rem 1.5rem;font-size:.85rem;line-height:1.6}.embed-footer{z-index:10;-webkit-backdrop-filter:blur(10px);color:#ffffffb8;letter-spacing:.03em;text-align:center;background:#000000eb;padding:1rem 1.5rem;font-size:.8rem;line-height:1.6;position:fixed;bottom:0;left:0;right:0}.embed-footer a{color:#ffffffa6;text-underline-offset:3px;font-weight:700;text-decoration:underline}.checklist{gap:10px;margin:18px 0 0;padding:0;list-style:none;display:grid}.checklist li{color:#e2e8f0;background:#ffffff0f;border:1px solid #ffffff1a;border-radius:16px;grid-template-columns:28px 1fr;align-items:start;gap:10px;padding:12px;line-height:1.4;display:grid}.checkmark{color:#d8b4fe;background:#bb86fc2e;border-radius:999px;place-items:center;width:28px;height:28px;font-weight:900;display:grid}.cta-link{color:#fff;background:#ffffff08;border:1px solid #ffffff1f;border-radius:100px;justify-content:center;width:100%;margin-top:18px;padding:13px 16px;font-weight:700;text-decoration:none;display:inline-flex}@media (width<=420px){.embed-body{padding:2rem 1.5rem 5rem}h1{font-size:2.2rem}h2,.section-num{font-size:1.2rem}.result-grid,.input-row,.mode-switch{grid-template-columns:1fr}.calculator-select{min-width:100%}}