:root{color-scheme:dark;--bg:#080d18;--panel:#111b2b;--line:#334157;--ink:#f3f5f7;--muted:#bac4d1;--mint:#81e9bf;--violet:#c6a8ff;--gold:#f1ce83;font:16px/1.65 "Segoe UI",Arial,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink)}a{color:var(--mint);text-underline-offset:3px}main{width:min(1040px,calc(100% - 32px));margin:0 auto;padding:34px 0 60px}h1,h2,h3{font-family:Georgia,"Times New Roman",serif;font-weight:500;line-height:1.2}h1{font-size:clamp(2rem,5vw,3.7rem);margin:.2em 0}h2{font-size:1.65rem}.eyebrow{color:var(--mint);font-size:.72rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase}.lead,.muted{color:var(--muted)}.intro{max-width:760px}.pill-row{display:flex;flex-wrap:wrap;gap:8px;margin:20px 0}.pill{border:1px solid var(--line);border-radius:999px;padding:4px 10px;color:#dce6ef;font-size:.8rem}.workflow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;margin:24px 0}.stage{border:1px solid var(--line);border-radius:6px;padding:12px;background:#0d1522}.stage b{display:block;color:var(--mint)}.lab-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,.85fr);gap:18px;align-items:start}.card{border:1px solid var(--line);border-radius:8px;background:var(--panel);padding:20px}.card h2{margin-top:0}.equation-card{margin-top:18px}.references{margin-top:22px}.fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.field label{display:block;font-size:.86rem;font-weight:650;margin-bottom:5px}.field small{display:block;color:var(--muted);font-size:.78rem;margin-top:4px}.field input,.field select{width:100%;min-height:46px;padding:10px 11px;border:1px solid #617087;border-radius:4px;background:#0a1220;color:var(--ink);font:inherit}.field :focus-visible,button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid var(--mint);outline-offset:3px}.wide{grid-column:1/-1}.note{border-left:3px solid var(--violet);background:#17182a;padding:11px 13px;color:#e5d9ff;border-radius:3px}.note[hidden],[hidden]{display:none!important}.results{display:grid;gap:10px}.results dl{margin:0}.results dl div{display:grid;grid-template-columns:1fr auto;gap:14px;border-bottom:1px solid var(--line);padding:8px 0}.results dt{color:var(--muted)}.results dd{margin:0;font-variant-numeric:tabular-nums;text-align:right}.results .emphasis dt,.results .emphasis dd{color:var(--mint);font-weight:700}.results .total dt,.results .total dd{color:var(--gold);font-weight:700;font-size:1.08rem}.status{min-height:3em;color:var(--mint);font-size:.9rem}.equation{display:block;overflow-wrap:anywhere;padding:12px;background:#0a1220;border:1px solid var(--line);border-radius:4px;font:.88rem/1.7 Consolas,monospace;color:#e1d6ff}.warning{border-left:3px solid var(--gold);padding:12px 14px;background:#1c1b17;color:#f0e6d0}footer{border-top:1px solid var(--line);margin-top:34px;padding-top:18px;color:var(--muted);font-size:.85rem}@media(max-width:760px){.lab-grid{grid-template-columns:1fr}.workflow{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:480px){main{width:min(100% - 24px,1040px);padding-top:20px}.card{padding:15px}.fields{grid-template-columns:1fr}.wide{grid-column:auto}.results dl div{grid-template-columns:minmax(0,1fr) auto;gap:8px}}