:root{--paper:#f6f3ec;--ink:#1d2430;--navy:#13294b;--brick:#a8432a;--rule:#d9d2c3;--soft:#ebe5d8;--ok:#2f6b3a}
@media (prefers-color-scheme:dark){:root{--paper:#14181f;--ink:#e8e4da;--navy:#9db4dc;--brick:#e08a6d;--rule:#323946;--soft:#1d232d;--ok:#7fc28c}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:16.5px/1.62 "Source Serif 4",Georgia,serif}
a{color:var(--navy);text-underline-offset:2px}
.rh-skip{position:absolute;left:-999px}.rh-skip:focus{left:8px;top:8px;background:var(--paper);padding:6px}
.rh-mast{border-bottom:3px double var(--rule);padding:14px 16px 0}
.rh-mast-in{max-width:1080px;margin:0 auto;display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:6px 18px}
.rh-logo{font:700 22px/1.1 "IBM Plex Sans Condensed",Arial Narrow,sans-serif;letter-spacing:.02em;color:var(--ink);text-decoration:none;text-transform:uppercase}
.rh-logo b{color:var(--brick)}
.rh-tag{font:13px/1.3 "IBM Plex Sans Condensed",sans-serif;color:#6b6457}
.rh-tabs{max-width:1080px;margin:10px auto 0;display:flex;gap:2px;overflow-x:auto;scrollbar-width:none}
.rh-tabs a{flex:0 0 auto;font:600 14px/1 "IBM Plex Sans Condensed",sans-serif;padding:10px 12px;text-decoration:none;color:var(--ink);border:1px solid var(--rule);border-bottom:0;border-radius:6px 6px 0 0;background:var(--soft)}
.rh-tabs a[aria-current]{background:var(--paper);color:var(--brick)}
.rh-body{max-width:1080px;margin:0 auto;padding:22px 16px 40px}
.rh-split{display:grid;grid-template-columns:minmax(0,1fr);gap:28px}
@media(min-width:900px){.rh-split{grid-template-columns:minmax(0,1.45fr) minmax(0,1fr)}.rh-side{position:sticky;top:12px;align-self:start}}
h1{font:700 clamp(28px,4.4vw,40px)/1.12 "IBM Plex Sans Condensed",sans-serif;margin:.1em 0 .45em;color:var(--navy)}
h2{font:700 22px/1.25 "IBM Plex Sans Condensed",sans-serif;margin:1.7em 0 .5em;padding-top:.6em;border-top:1px solid var(--rule)}
h3{font:600 18px/1.3 "IBM Plex Sans Condensed",sans-serif;margin:1.2em 0 .3em}
.rh-lede{font-size:19px;line-height:1.55}
.rh-jump{display:inline-block;font:700 15px "IBM Plex Sans Condensed",sans-serif;background:var(--navy);color:var(--paper);padding:9px 14px;border-radius:6px;text-decoration:none}
@media(min-width:900px){.rh-jump{display:none}}
.rh-ledger{border:1px solid var(--rule);border-radius:4px;margin:18px 0;background:var(--soft)}
.rh-ledger div{display:grid;grid-template-columns:5.6em 1fr;gap:10px;padding:10px 12px;border-top:1px dashed var(--rule)}
.rh-ledger div:first-child{border-top:0}
.rh-ledger dt,.rh-num{font:700 20px/1.2 "IBM Plex Mono",Consolas,monospace;color:var(--brick)}
.rh-ledger dd{margin:0}
.rh-note{font-size:14px;color:#6b6457}
@media (prefers-color-scheme:dark){.rh-note,.rh-tag{color:#a69f90}}
.rh-src{font-size:13.5px;border-left:3px solid var(--rule);padding:4px 0 4px 12px;margin:22px 0}
.rh-src li{margin:3px 0;word-break:break-word}
table.rh-tbl{border-collapse:collapse;width:100%;font-size:15px;margin:12px 0}
.rh-tbl th,.rh-tbl td{border-bottom:1px solid var(--rule);padding:7px 6px;text-align:left;vertical-align:top}
.rh-tbl th{font:600 14px "IBM Plex Sans Condensed",sans-serif}
.rh-wrap{overflow-x:auto}
.rh-card{border:2px solid var(--navy);border-radius:8px;padding:16px;background:var(--paper)}
.rh-card h2{border:0;margin-top:0;padding-top:0}
.rh-card label{display:block;font:600 14px/1.3 "IBM Plex Sans Condensed",sans-serif;margin:11px 0 4px}
.rh-card input,.rh-card select{width:100%;font:16px/1.3 inherit;padding:9px;border:1px solid #a49b88;border-radius:5px;background:#fff;color:#111}
.rh-two{display:grid;grid-template-columns:1fr 1fr;gap:0 10px}
.rh-chk{display:flex;gap:8px;align-items:flex-start;font:13.5px/1.45 inherit;margin-top:12px}
.rh-chk input{width:auto;margin-top:3px}
.rh-go{margin-top:14px;width:100%;font:700 17px "IBM Plex Sans Condensed",sans-serif;padding:12px;border:0;border-radius:6px;background:var(--brick);color:#fff;cursor:pointer}
.rh-go[disabled]{opacity:.6}
.rh-msg{min-height:1.4em;font-size:14px;color:var(--brick);margin-top:8px}
.rh-trap{position:absolute;left:-5000px;width:1px;height:1px;overflow:hidden}
.rh-steps{counter-reset:s;list-style:none;padding:0}
.rh-steps li{counter-increment:s;position:relative;padding:0 0 12px 40px}
.rh-steps li::before{content:counter(s);position:absolute;left:0;top:0;width:28px;height:28px;border-radius:50%;background:var(--navy);color:var(--paper);font:700 15px/28px "IBM Plex Mono",monospace;text-align:center}
.rh-flag{background:var(--soft);border:1px solid var(--rule);border-left:5px solid var(--brick);padding:10px 14px;margin:16px 0}
details.rh-q{border-bottom:1px solid var(--rule);padding:8px 0}
details.rh-q summary{cursor:pointer;font:600 16.5px/1.35 "IBM Plex Sans Condensed",sans-serif}
.rh-foot{border-top:3px double var(--rule);padding:22px 16px;font-size:14px}
.rh-foot-in{max-width:1080px;margin:0 auto;display:grid;gap:14px}
@media(min-width:760px){.rh-foot-in{grid-template-columns:2fr 1fr}}
.rh-foot ul{list-style:none;padding:0;margin:0;columns:2}
.rh-foot li{margin:0 0 6px}