:root{--navy:#10233f;--ink:#14253e;--muted:#5d6b7e;--line:#e4e9ef;--blue:#335c92}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:#fff;font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}
a{color:var(--blue);text-underline-offset:3px}
.bar{border-bottom:1px solid var(--line);position:sticky;top:0;background:rgba(255,255,255,.95);backdrop-filter:blur(14px);z-index:5}
.bar div{max-width:820px;margin:auto;padding:0 24px;height:68px;display:flex;align-items:center;justify-content:space-between}
.bar img{width:160px;height:auto;display:block}
.bar a.back{font-size:14px;font-weight:550;color:var(--muted);text-decoration:none}.bar a.back:hover{color:var(--navy)}
main{max-width:820px;margin:auto;padding:56px 24px 90px}
.kicker{font-size:12px;letter-spacing:.14em;text-transform:uppercase;font-weight:650;color:#456386}
h1{font-size:clamp(34px,5vw,48px);line-height:1.12;letter-spacing:-.045em;font-weight:650;margin:12px 0 10px}
.updated{color:#7b8ca2;font-size:14px;margin:0 0 34px}
.lead{font-size:18px;color:var(--muted);margin:0 0 10px}
h2{font-size:22px;letter-spacing:-.03em;font-weight:600;margin:44px 0 10px;scroll-margin-top:90px}
p,li{color:#33445c}
ul{padding-left:22px}li{margin:6px 0}
.toc{background:#f6f8fb;border:1px solid var(--line);border-radius:14px;padding:18px 24px;margin:28px 0}
.toc b{display:block;font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:#6f89a8;margin-bottom:6px}
.toc ol{margin:0;padding-left:20px}.toc a{text-decoration:none}
.note{border-left:3px solid #8fb0d8;background:#f6f9fd;padding:14px 18px;border-radius:0 10px 10px 0;margin:22px 0;color:#3e5470}
table{border-collapse:collapse;width:100%;font-size:15px;margin:14px 0}
th,td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}th{background:#f6f8fb;font-weight:600}
footer{border-top:1px solid var(--line);padding:26px 24px;text-align:center;font-size:13px;color:#8a97a8}
footer a{margin:0 10px;color:#6f7f93}
@media(max-width:600px){main{padding:36px 20px 70px}.bar img{width:138px}}