:root {
  --ink: #1b2430; --muted: #5b6673; --line: #e3e8ee; --bg: #f6f8fa; --card: #ffffff;
  --brand: #1f4e79; --brand-2: #2b6cb0; --fha: #1f4e79; --cfpb: #6b4fbb; --ok: #1e7f4f; --warn: #b7791f; --err: #b83232;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--ink); line-height: 1.5; }
a { color: var(--brand-2); }
code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .9em; }
.top { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .6rem 1rem; padding: .8rem 1.2rem; background: var(--card); border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: .55rem; font-weight: 700; font-size: 1.15rem; color: var(--ink); text-decoration: none; }
.brand small { font-weight: 400; color: var(--muted); font-size: .8rem; }
.logo { display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 8px; background: var(--brand); color: #fff; font-weight: 800; }
nav a { margin-left: 1rem; text-decoration: none; color: var(--muted); font-weight: 600; padding: .25rem 0; border-bottom: 2px solid transparent; }
nav a.active, nav a:hover { color: var(--brand); border-bottom-color: var(--brand); }
main { max-width: 960px; margin: 0 auto; padding: 1.2rem; }
.hero h1 { font-size: 1.7rem; margin: .4rem 0 .3rem; }
.hero p { margin: 0 0 1rem; color: var(--muted); }
.askform { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; }
.askform input[type=search], .askform input[name=zip] { flex: 1 1 320px; padding: .7rem .9rem; font-size: 1.05rem; border: 1px solid var(--line); border-radius: 8px; background: var(--card); }
.askform select, .askform input[type=date] { padding: .55rem .6rem; border: 1px solid var(--line); border-radius: 8px; background: var(--card); font-size: 1rem; }
.askform button { padding: .7rem 1.2rem; font-size: 1.05rem; border: 0; border-radius: 8px; background: var(--brand); color: #fff; font-weight: 600; cursor: pointer; }
.askform button:hover { background: var(--brand-2); }
.adv { flex-basis: 100%; color: var(--muted); font-size: .9rem; }
.adv label { margin-right: 1rem; }
.examples { display: flex; flex-wrap: wrap; gap: .4rem; margin: .8rem 0 1.2rem; }
.examples a { font-size: .85rem; text-decoration: none; background: var(--card); border: 1px solid var(--line); border-radius: 999px; padding: .25rem .7rem; color: var(--brand); }
.examples a:hover { border-color: var(--brand-2); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 1rem 1.2rem; margin: .8rem 0; }
.route { display: flex; flex-wrap: wrap; gap: .5rem .9rem; align-items: center; margin: .4rem 0 .8rem; font-size: .9rem; }
.badge { display: inline-block; font-size: .74rem; font-weight: 700; letter-spacing: .02em; padding: .15rem .55rem; border-radius: 999px; background: #e9eef4; color: var(--ink); text-transform: uppercase; }
.badge.fha { background: #e3edf7; color: var(--fha); }
.badge.cfpb { background: #ece6fa; color: var(--cfpb); }
.badge.ok { background: #e2f3ea; color: var(--ok); }
.badge.warn { background: #fbf0dc; color: var(--warn); }
.badge.muted { background: #eef1f4; color: var(--muted); }
.badge.route { background: var(--brand); color: #fff; }
.struct h2 { margin: .2rem 0 .5rem; font-size: 1.2rem; }
.big { font-size: 2rem; font-weight: 800; margin: .3rem 0; color: var(--brand); }
.big small { font-size: 1rem; font-weight: 400; color: var(--muted); }
table { width: 100%; border-collapse: collapse; font-size: .95rem; }
th, td { text-align: left; padding: .45rem .5rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: .8rem; text-transform: uppercase; letter-spacing: .03em; }
.tablewrap { overflow-x: auto; }
.evh { font-size: 1.1rem; margin: 1.2rem 0 .3rem; color: var(--muted); }
.ev h3 { margin: .4rem 0 .2rem; font-size: 1.1rem; }
.ev h3 a { color: var(--ink); text-decoration: none; }
.ev h3 a:hover { color: var(--brand-2); }
.evhead { display: flex; gap: .4rem; align-items: center; flex-wrap: wrap; }
.rank { margin-left: auto; color: var(--muted); font-size: .85rem; }
.path { color: var(--muted); font-size: .85rem; margin: 0 0 .5rem; }
.text { white-space: pre-line; margin: .3rem 0 .6rem; }
.cite { font-size: .9rem; margin: .2rem 0; font-weight: 600; }
.meta { font-size: .82rem; color: var(--muted); margin: .2rem 0; }
.why { font-size: .85rem; color: var(--muted); }
.why summary { cursor: pointer; }
.cites { font-size: .9rem; }
.kv { display: grid; grid-template-columns: max-content 1fr; gap: .3rem 1rem; font-size: .92rem; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; overflow-wrap: anywhere; }
pre.body { white-space: pre-wrap; background: var(--bg); border: 1px solid var(--line); border-radius: 8px; padding: .9rem; font-family: inherit; font-size: .95rem; }
.muted { color: var(--muted); }
.warn { color: var(--warn); }
.error { color: var(--err); font-weight: 600; }
.foot { max-width: 960px; margin: 2rem auto; padding: 0 1.2rem 2rem; color: var(--muted); font-size: .82rem; }
@media (max-width: 640px) { .kv { grid-template-columns: 1fr; } nav a { margin-left: .7rem; } }

.chat .turn { padding: .6rem 0; border-top: 1px solid var(--line); }
.chat > .turn:first-child, .chat details .turn:first-of-type { border-top: 0; }
.chat .who { display: block; font-size: .72rem; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); font-weight: 700; margin-bottom: .2rem; }
.chat .turn.user p { margin: 0; font-weight: 600; }
.chat .turn.assistant p { margin: .3rem 0; }
.chat .turn.assistant ul { margin: .3rem 0 .5rem; }
.chat .unsupported { border-left: 3px solid var(--warn); padding-left: .8rem; }
.chat .cref { text-decoration: none; font-weight: 700; color: var(--brand-2); }
.chat .citehead { font-size: .78rem; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); margin: .8rem 0 .2rem; font-weight: 700; }
.chat ol.cites { margin: 0 0 .4rem; padding-left: 1.2rem; font-size: .9rem; }
.chat ol.cites li { margin: .15rem 0; }
.chat .prior { color: var(--muted); font-size: .9rem; margin-bottom: .4rem; }
.chat #followup { margin-top: .8rem; }