/* MargoEngine whitepaper (staging). Same palette, font stack and layout rules as the landing page. No web fonts, no inline script. */
:root{--accent-l:#0f766e;--accent-d:#5eead4}
:root{color-scheme:light dark;--bg:#f5f6f9;--surface:#fff;--text:#141b2d;--muted:#4a556b;--line:#d5dae4;--accent:var(--accent-l);--accent-soft:#e3f1ef;--accent-text:#fff;--radius:10px;--mono:ui-monospace,"Cascadia Code",Consolas,monospace;font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--text);background:var(--bg);line-height:1.62}
@media (prefers-color-scheme:dark){:root{--bg:#0b1020;--surface:#121a30;--text:#e9edf6;--muted:#a9b3c7;--line:#26304a;--accent:var(--accent-d);--accent-soft:#10262b;--accent-text:#0b1020}}
*{box-sizing:border-box}body{margin:0;font-size:1.0625rem}
a{color:var(--accent);text-underline-offset:3px}:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
.skip{position:absolute;left:16px;top:-100px;background:var(--surface);padding:10px 14px;border-radius:var(--radius)}.skip:focus{top:12px}
.nav,.page,footer{max-width:58rem;margin-inline:auto;padding-inline:20px}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{font-weight:700;letter-spacing:-.01em;color:var(--text);text-decoration:none;font-size:1.15rem}
.navlink{color:var(--muted);text-decoration:none;padding-block:12px}.navlink:hover{color:var(--text)}
.page{padding-block:24px 64px}.col{max-width:42rem}
.masthead{border-bottom:2px solid var(--text);padding-bottom:28px;margin-bottom:8px}
.eyebrow{font-weight:600;color:var(--accent);font-size:.95rem;margin:0 0 10px}
h1{font-weight:800;font-size:clamp(2.1rem,5vw,3.1rem);line-height:1.05;letter-spacing:-.02em;margin:0;text-wrap:balance}
.deck{font-size:1.2rem;line-height:1.45;color:var(--muted);margin:14px 0 0;max-width:40rem;text-wrap:pretty}
.byline{font-size:.92rem;color:var(--muted);margin-top:18px}
h2{font-weight:700;font-size:1.5rem;line-height:1.15;letter-spacing:-.01em;margin:48px 0 12px;text-wrap:balance}
p{margin:0 0 14px}ul{margin:0 0 16px;padding-left:1.3em}li{margin-bottom:8px}
code{font-family:var(--mono);font-size:.86em;background:var(--surface);border:1px solid var(--line);border-radius:4px;padding:0 .3em}
.note{font-size:.95rem;color:var(--muted);margin-top:10px}
.ledger{display:grid;grid-template-columns:repeat(auto-fit,minmax(12.5rem,1fr));border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin:28px 0 8px}
.ledger div{padding:16px 16px 14px 0;min-width:0}.ledger div+div{border-left:1px solid var(--line);padding-left:16px}
.ledger b{display:block;font-weight:800;font-size:1.8rem;line-height:1.05;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.ledger span{display:block;font-size:.92rem;color:var(--muted);line-height:1.35;margin-top:4px}
@media (max-width:640px){.ledger div+div{border-left:0;padding-left:0;border-top:1px solid var(--line)}}
.status{background:var(--accent-soft);border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:6px;padding:16px 18px 6px;margin:24px 0}
.status h2{margin:0 0 8px;font-size:1.05rem;color:var(--accent)}
.table{overflow-x:auto;margin:10px 0 0;border:1px solid var(--line);border-radius:6px;background:var(--surface)}
table{border-collapse:collapse;width:100%;font-size:.92rem;line-height:1.4}
th,td{text-align:left;padding:8px 12px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-weight:700;background:var(--accent-soft)}tbody tr:last-child td{border-bottom:0}
td.num,th.num{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}
.join-cta{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:8px 24px 12px;margin-top:48px}
.join-cta h2{margin-top:16px}
.button{display:inline-block;font-weight:600;padding:12px 20px;border-radius:var(--radius);border:1px solid var(--accent);background:var(--accent);color:var(--accent-text);text-decoration:none}
footer{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-block:24px 36px;border-top:1px solid var(--line);font-size:.95rem}
footer a{color:var(--muted);padding-block:10px}
html{scroll-behavior:smooth}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
.article ul{margin-bottom:18px}
.article strong{font-weight:700}
.article h2{margin-top:44px}
.closing{margin-top:40px;padding-top:16px;border-top:1px solid var(--line);color:var(--muted);font-style:italic}