*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text",Inter,Arial,sans-serif;color:var(--ink);-webkit-font-smoothing:antialiased}
.wrap{width:min(920px,calc(100% - 48px));margin:auto}
nav{position:sticky;top:0;z-index:5;border-bottom:1px solid rgba(17,62,96,.08);backdrop-filter:blur(22px) saturate(150%);-webkit-backdrop-filter:blur(22px) saturate(150%)}
.nav{height:58px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{color:var(--ink);font-size:14px;font-weight:760;letter-spacing:-.025em;text-decoration:none}
.back{display:inline-flex;align-items:center;gap:7px;padding:9px 14px;border:1px solid rgba(255,255,255,.7);border-radius:999px;color:var(--ink);font-size:13px;font-weight:700;text-decoration:none}
main{padding:88px 0 112px}
.eyebrow{margin:0 0 17px;color:#0563b1;font-size:12px;font-weight:800;letter-spacing:.08em;text-transform:uppercase}
h1{max-width:760px;margin:0;font-size:clamp(46px,7vw,76px);line-height:.98;letter-spacing:-.06em}
.intro{max-width:720px;margin:28px 0 44px;color:var(--muted);font-size:19px;line-height:1.58}
.card{padding:42px 44px;border:1px solid rgba(255,255,255,.8);border-radius:30px}
section+section{padding-top:28px;margin-top:28px;border-top:1px solid var(--line)}
h2{margin:0 0 11px;font-size:22px;letter-spacing:-.035em}
p{margin:0;color:var(--muted);font-size:16px;line-height:1.65}
p+p{margin-top:10px}
a{color:var(--blue)}
.updated{margin-top:28px;font-size:13px;color:#657d8f}
footer{padding:26px 0;border-top:1px solid rgba(17,62,96,.08);font-size:12px}
.foot{display:flex;justify-content:space-between;gap:20px}
@media(max-width:760px){.wrap{width:min(100% - 28px,920px)}
.nav{height:54px}
.brand{max-width:60%;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
main{padding:68px 0 82px}
h1{font-size:46px}
.intro{font-size:17px;margin:23px 0 32px}
.card{padding:27px 23px;border-radius:24px}
h2{font-size:21px}
.foot{display:block}
.foot span{display:block;margin-top:6px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
:root{--ink:#13283b;--muted:#405f76;--blue:#045a9f;--canvas:#d4e7f5;--panel:rgba(239,247,252,.86);--line:rgba(17,62,96,.14)}
body{background:linear-gradient(180deg,#d4e7f5 0%,#c5ddee 100%)}
nav{background:rgba(204,224,239,.88);border-bottom-color:rgba(19,55,82,.11)}
.card{box-shadow:0 20px 55px rgba(24,67,98,.10)}
footer{background:#b8d4e8;color:#294e69;border-top-color:rgba(19,55,82,.12)}
:root{--surface-card:#E1EDF6;--surface-control:#E9F2F8;--surface-border:rgba(35,78,110,.16)}
.card{background:var(--surface-card);border-color:var(--surface-border)}
.back{background:var(--surface-control);border-color:var(--surface-border)}