:root{--ink:#0a1730;--muted:#5f7084;--line:#dce5ef;--blue:#1769f5;--soft:#f5f8fc;--white:#fff}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--white);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.6}
a{color:inherit}
.nav{min-height:72px;display:flex;align-items:center;justify-content:space-between;padding:0 5%;border-bottom:1px solid var(--line);background:#fff;position:sticky;top:0;z-index:20}
.brand{font-size:28px;font-weight:900;text-decoration:none;letter-spacing:-1px}.brand strong{color:var(--blue)}
.nav nav{display:flex;gap:22px;align-items:center;flex-wrap:wrap}.nav nav a{font-size:12px;font-weight:800;text-decoration:none;letter-spacing:.04em}.nav nav a:hover,.nav nav a[aria-current="page"]{color:var(--blue)}
.hero{max-width:1180px;margin:0 auto;padding:92px 28px 64px;display:grid;grid-template-columns:1.25fr .75fr;gap:58px;align-items:center}
.eyebrow{font-size:12px;font-weight:900;letter-spacing:.16em;text-transform:uppercase;color:var(--blue);margin-bottom:18px}
h1{font-size:clamp(46px,7vw,84px);line-height:.98;letter-spacing:-.055em;margin:0 0 24px;max-width:850px}
.lede{font-size:22px;line-height:1.5;color:var(--muted);max-width:780px;margin:0 0 28px}
.principle{font-size:20px;font-weight:850;padding:18px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);display:inline-block}
.hero-card{border:1px solid var(--line);background:var(--soft);border-radius:22px;padding:28px}.hero-card h2{font-size:22px;margin:0 0 18px}.flow{display:grid;gap:9px}.flow span{display:block;padding:12px 14px;border-radius:10px;background:#fff;border:1px solid var(--line);font-weight:750;font-size:14px}.arrow{text-align:center;color:var(--blue);font-weight:900}
main section{max-width:1180px;margin:0 auto;padding:70px 28px}
.section-label{font-size:12px;color:var(--blue);font-weight:900;letter-spacing:.14em;text-transform:uppercase;margin-bottom:10px}
h2{font-size:clamp(32px,4vw,50px);line-height:1.08;letter-spacing:-.035em;margin:0 0 18px}.intro{font-size:19px;color:var(--muted);max-width:850px;margin:0}
.three{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:34px}.card{border:1px solid var(--line);border-radius:18px;padding:26px;background:#fff}.card h3{font-size:20px;margin:0 0 10px}.card p{margin:0;color:var(--muted)}
.context{background:var(--soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.matrix{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:34px}.matrix article{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px}.matrix strong{display:block;font-size:16px;margin-bottom:6px}.matrix p{margin:0;color:var(--muted)}
.rule{margin-top:30px;padding:24px 26px;border-left:4px solid var(--blue);background:#fff;font-size:20px;font-weight:800}
.states{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:30px}.state{border:1px solid var(--line);border-radius:14px;padding:20px;min-height:135px}.state b{display:block;margin-bottom:8px}.state p{margin:0;color:var(--muted);font-size:14px}
.safety-path{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:34px}.path{padding:28px;border:1px solid var(--line);border-radius:18px}.path h3{margin:0 0 12px}.path p{color:var(--muted)}.path code{display:block;white-space:normal;background:var(--soft);padding:14px;border-radius:10px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px}
.note{margin-top:26px;color:var(--muted);font-size:15px}
.cta{margin:0 auto 70px;max-width:1124px;background:var(--ink);color:#fff;border-radius:24px;padding:42px;display:flex;justify-content:space-between;gap:30px;align-items:center}.cta h2{margin:0 0 8px;font-size:36px}.cta p{margin:0;color:#c9d5e4}.cta a{flex:0 0 auto;background:#fff;color:var(--ink);padding:13px 18px;border-radius:9px;text-decoration:none;font-weight:850}
footer{border-top:1px solid var(--line);padding:22px 5%;display:flex;justify-content:center;gap:8px;flex-wrap:wrap;color:#6f7f90;font-size:11px;font-weight:650}footer a{text-decoration:none}footer a:hover{color:var(--blue)}
@media(max-width:1000px){.nav{height:auto;align-items:flex-start;padding:14px 18px}.nav nav{justify-content:flex-end;gap:10px 14px}.hero{grid-template-columns:1fr;padding-top:62px}.three,.states{grid-template-columns:1fr 1fr}.safety-path{grid-template-columns:1fr}.cta{margin-left:18px;margin-right:18px;align-items:flex-start;flex-direction:column}}
@media(max-width:650px){.nav nav a:not([aria-current="page"]){display:none}.hero{padding:50px 20px}.three,.matrix,.states{grid-template-columns:1fr}main section{padding:54px 20px}.lede{font-size:19px}.cta{padding:30px 24px}.cta h2{font-size:30px}}