:root{
  --ink:#211218;--ink2:#391824;--paper:#fbf8f7;--card:#ffffff;--muted:#74636a;
  --line:#e7d8dc;--blue:#9d2235;--teal:#008c95;--orange:#f28c28;--rose:#d64e68;
  --wash:#fbeaec;--wash2:#e7f5f3;--radius:22px;--shadow:0 18px 45px rgba(98,18,37,.11);
  --max:1180px;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;line-height:1.62}a{color:var(--blue);text-decoration-thickness:1px;text-underline-offset:3px}a:hover{text-decoration-thickness:2px}img{max-width:100%;display:block}code{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;background:#f4e8eb;padding:.1em .35em;border-radius:6px}.wrap{width:min(var(--max),calc(100% - 40px));margin:auto}
.skip{position:absolute;left:-9999px}.skip:focus{left:16px;top:16px;z-index:99;background:white;padding:10px 14px;border-radius:10px}
header{position:sticky;top:0;z-index:50;background:rgba(251,248,247,.92);backdrop-filter:blur(14px);border-bottom:1px solid rgba(231,216,220,.88)}.nav{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:28px}.brand{display:flex;align-items:center;gap:12px;color:var(--ink);text-decoration:none;font-weight:800;letter-spacing:-.02em}.brand img{width:37px;height:37px}.brand span small{display:block;color:var(--muted);font-weight:650;font-size:.69rem;letter-spacing:.08em;text-transform:uppercase;margin-top:-2px}.navlinks{display:flex;flex-wrap:wrap;gap:6px;align-items:center}.navlinks a{color:var(--ink2);text-decoration:none;font-weight:650;font-size:.91rem;padding:9px 11px;border-radius:999px}.navlinks a:hover,.navlinks a[aria-current="page"]{background:white;box-shadow:0 4px 18px rgba(98,18,37,.09)}.navlinks .navsource{background:#fff;color:var(--blue);border:1px solid #c98f9a}.navlinks .navsource:hover{background:var(--wash);box-shadow:0 4px 18px rgba(98,18,37,.10)}.navlinks .launch{background:var(--blue);color:white}.navlinks .launch:hover{background:#74182a}
.hero{padding:88px 0 56px}.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:.8rem;text-transform:uppercase;letter-spacing:.15em;font-weight:800;color:var(--teal);margin-bottom:18px}.eyebrow:before{content:"";width:28px;height:2px;background:currentColor}.hero h1,.pagehero h1{font-size:clamp(2.8rem,6vw,5.45rem);line-height:.96;letter-spacing:-.06em;margin:0 0 24px}.hero h1 em{font-style:normal;color:var(--blue)}.lede{font-size:clamp(1.08rem,2vw,1.35rem);color:#55424a;max-width:690px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}.btn{display:inline-flex;align-items:center;gap:9px;padding:13px 17px;border-radius:13px;font-weight:800;text-decoration:none;border:1px solid var(--ink)}.btn.primary{background:var(--blue);color:#fff}.btn.primary:hover{background:#74182a;border-color:#74182a}.btn.secondary{background:#fff;color:var(--ink)}.btn img{width:18px;height:18px}.hero-art{background:linear-gradient(155deg,#fff,#f9e8ec);border:1px solid var(--line);border-radius:32px;padding:22px;box-shadow:var(--shadow);position:relative}.hero-art:after{content:"Conceptual visual • not an app screenshot";display:block;margin-top:12px;color:var(--muted);font-size:.72rem;text-align:right}
.strip{padding:22px 0}.strip-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.metric{padding:17px 18px;background:#fff;border:1px solid var(--line);border-radius:18px}.metric strong{display:block;font-size:1.18rem}.metric span{font-size:.83rem;color:var(--muted)}
section{padding:76px 0}.section-head{display:grid;grid-template-columns:.8fr 1.2fr;gap:48px;align-items:end;margin-bottom:32px}.section-head h2{font-size:clamp(2rem,4vw,3.4rem);letter-spacing:-.045em;line-height:1.02;margin:0}.section-head p{margin:0;color:#5d4850;font-size:1.05rem}.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:25px;box-shadow:0 8px 28px rgba(98,18,37,.05)}.card h3{margin:13px 0 9px;font-size:1.24rem;letter-spacing:-.02em}.card p{color:#67545b;margin:0}.lede strong,.section-head p strong,.card p strong,.step p strong,.micro strong,.note strong{font-weight:700;color:inherit}.icon{width:40px;height:40px}.tag{display:inline-block;padding:6px 9px;border-radius:999px;background:var(--wash);color:var(--blue);font-size:.75rem;font-weight:800}.callout{background:linear-gradient(135deg,#5d1021,#8b1d34);color:white;border-radius:28px;padding:34px}.callout p{color:#f0dfe4}.callout .btn.secondary{border-color:white}.callout-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:center}
.pagehero{padding:72px 0 32px}.pagehero h1{font-size:clamp(2.6rem,5vw,4.5rem);max-width:900px}.pagehero .lede{max-width:830px}.crumb{font-size:.78rem;color:var(--muted);font-weight:800;text-transform:uppercase;letter-spacing:.12em;margin-bottom:18px}.process{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;counter-reset:step}.step{position:relative;background:white;border:1px solid var(--line);border-radius:20px;padding:23px 18px;min-height:230px;counter-increment:step}.step:before{content:"0" counter(step);display:block;font-weight:900;font-size:2rem;color:#d9bdc5;margin-bottom:24px}.step h3{font-size:1.05rem;margin:0 0 8px}.step p{font-size:.9rem;color:#69575e;margin:0}.rule{height:1px;background:var(--line);margin:24px 0}.note{border-left:4px solid var(--teal);background:#e7f5f3;border-radius:0 14px 14px 0;padding:17px 19px;color:#285d5f}.warning{border-left-color:var(--orange);background:#fff2e6;color:#744117}.viz-card{overflow:hidden;padding:0}.viz-card .copy{padding:24px}.viz-card .visual{background:#fdf9fa;border-top:1px solid var(--line);padding:18px}.viz-card img{width:100%;aspect-ratio:16/9;object-fit:contain}.micro{font-size:.79rem;color:var(--muted)}
.table-wrap{overflow:auto;background:white;border:1px solid var(--line);border-radius:20px}table{border-collapse:collapse;width:100%;min-width:680px}th,td{text-align:left;padding:15px 16px;border-bottom:1px solid var(--line);vertical-align:top}th{font-size:.76rem;text-transform:uppercase;letter-spacing:.09em;color:#74636a;background:#fcf7f8}td{color:#57434b}.formula{font-size:clamp(1.2rem,3vw,2.1rem);font-family:Georgia,"Times New Roman",serif;background:white;border:1px solid var(--line);border-radius:18px;padding:24px;text-align:center}.ref-list{display:grid;gap:12px}.ref{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px}.ref strong{display:block;margin-bottom:5px}.ref span{color:#67545b}
.footer{margin-top:70px;background:#4e0f1d;color:#f8edf0;padding:48px 0 28px}.footer-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:50px}.footer h2{font-size:1.8rem;margin:0 0 10px}.footer p{color:#e4cbd2}.footer-links{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.footer-links a{display:block;background:#671528;color:white;text-decoration:none;padding:14px;border-radius:14px;font-weight:750}.footer-links a span{display:block;color:#ddb9c3;font-size:.74rem;font-weight:500;margin-top:3px}.fine{border-top:1px solid #7a2b3d;margin-top:28px;padding-top:20px;font-size:.76rem;color:#d6b2bc;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}.fine a{color:#f2d9df}
@media(max-width:1060px){.hero-grid,.section-head,.callout-grid,.footer-grid{grid-template-columns:1fr}.grid3{grid-template-columns:1fr 1fr}.process{grid-template-columns:1fr 1fr}.strip-grid{grid-template-columns:1fr 1fr}.nav{align-items:flex-start;padding:14px 0;flex-direction:column;gap:10px}.navlinks{width:100%}.hero{padding-top:58px}}
@media(max-width:620px){.wrap{width:min(100% - 24px,var(--max))}.grid3,.grid2,.process,.strip-grid,.footer-links{grid-template-columns:1fr}.hero h1,.pagehero h1{letter-spacing:-.045em}.hero{padding-top:42px}.hero-art{padding:12px;border-radius:22px}section{padding:56px 0}.section-head{gap:16px}.navlinks a{font-size:.82rem;padding:7px 9px}.metric{padding:14px}.footer{padding-top:38px}}
@media(prefers-reduced-motion:no-preference){.card,.btn,.metric,.navlinks a{transition:transform .18s ease,box-shadow .18s ease,background .18s ease}.card:hover,.metric:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(98,18,37,.09)}}