/* The Exchange Building — Downtown Memphis Guide (SEO content hub).
   Shared stylesheet for every /guide/* article. Light-mode-first, with a dark
   toggle, matching the main site's editorial palette (Newsreader + Hanken
   Grotesk, aged-paper / brass). */

:root{
  --paper:#faf7f0; --paper-soft:#f3ecdf; --surface:#fffdf8; --ink:#241d15; --body:#574d40;
  --muted:#685e4e; --line:#e9dfca; --brass:#a9803f; --brass-bright:#c79a4e; --brass-deep:#80591a;
  --cta-grad:linear-gradient(180deg,#c79a4e,#a9803f); --cta-ink:#2c2009; --cta-shadow:rgba(169,128,63,.30);
  --serif:"Newsreader",Georgia,"Times New Roman",serif; --sans:"Hanken Grotesk",-apple-system,sans-serif;
  --shadow:0 18px 50px rgba(60,45,20,.10); --shadow-sm:0 6px 20px rgba(60,45,20,.07); --r:16px;
}
[data-theme="dark"]{
  --paper:#0e0c0a; --paper-soft:#15110c; --surface:#181410; --ink:#f3ecdd; --body:#cdc1ad;
  --muted:#a99c87; --line:rgba(214,189,134,.16); --brass:#c79a4e; --brass-bright:#e3c890; --brass-deep:#e3c890;
  --cta-grad:linear-gradient(180deg,#e3c890,#bd9046); --cta-ink:#2c2009; --cta-shadow:rgba(199,154,78,.28);
  --shadow:0 18px 50px rgba(0,0,0,.5); --shadow-sm:0 6px 20px rgba(0,0,0,.4);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--paper);color:var(--body);font-family:var(--sans);font-size:17.5px;line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden;transition:background .4s ease,color .4s ease}
a{color:var(--brass-deep);text-decoration:underline;text-underline-offset:2px;text-decoration-thickness:1px;transition:color .15s}
a:hover{color:var(--brass)}
img{max-width:100%;display:block}
.wrap{max-width:760px;margin:0 auto;padding:0 22px}

/* Nav */
header.gnav{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--paper) 92%,transparent);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.gnav-in{max-width:1080px;margin:0 auto;padding:0 22px;height:64px;display:flex;align-items:center;justify-content:space-between;gap:14px}
.glogo{display:flex;align-items:center;gap:11px;text-decoration:none}
.glogo .mark{width:38px;height:38px;border-radius:9px;background:var(--ink);color:var(--brass-bright);font-family:var(--serif);font-weight:600;font-size:21px;display:grid;place-items:center;flex:none}
.glogo .lt1{font-family:var(--serif);font-size:18px;font-weight:600;letter-spacing:.03em;color:var(--ink);white-space:nowrap;display:block;line-height:1.05}
.glogo .lt2{font-size:9.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--brass);white-space:nowrap;display:block;margin-top:1px}
.gnav-links{display:flex;align-items:center;gap:22px;font-size:14.5px;font-weight:500}
.gnav-links a{color:var(--body);text-decoration:none}
.gnav-links a:hover{color:var(--brass-deep)}
.gtoggle{width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:transparent;color:var(--ink);cursor:pointer;font-size:16px;display:grid;place-items:center}
.gtoggle:hover{border-color:var(--brass);color:var(--brass-deep)}
@media(max-width:720px){.gnav-links a:not(.gnav-cta){display:none}}
.gnav-cta{display:inline-flex;align-items:center;gap:7px;padding:9px 16px;border-radius:999px;background:var(--cta-grad);color:var(--cta-ink)!important;font-weight:600;font-size:14px;text-decoration:none}

/* Article */
main.garticle{padding:38px 0 20px}
.crumb{font-size:13px;color:var(--muted);margin-bottom:20px}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--brass-deep)}
.eyebrow{font-size:12.5px;letter-spacing:.22em;text-transform:uppercase;color:var(--brass-deep);font-weight:600;margin-bottom:14px}
article h1{font-family:var(--serif);font-weight:600;color:var(--ink);font-size:clamp(33px,5.2vw,50px);line-height:1.08;letter-spacing:-.015em;margin-bottom:18px}
article h2{font-family:var(--serif);font-weight:600;color:var(--ink);font-size:clamp(25px,3.4vw,33px);line-height:1.18;letter-spacing:-.01em;margin:46px 0 14px}
article h3{font-family:var(--serif);font-weight:600;color:var(--ink);font-size:21px;margin:30px 0 10px}
article p{margin-bottom:18px}
article .lede{font-size:20px;line-height:1.6;color:var(--ink);margin-bottom:26px}
article ul,article ol{margin:0 0 20px 1.2em;padding-left:.6em}
article li{margin-bottom:9px}
article strong{color:var(--ink);font-weight:700}
article em{font-style:italic}
article blockquote{border-left:3px solid var(--brass);padding:8px 0 8px 22px;margin:28px 0;font-family:var(--serif);font-style:italic;font-size:22px;line-height:1.5;color:var(--ink)}
article hr{border:none;border-top:1px solid var(--line);margin:40px 0}
.updated{font-size:13px;color:var(--muted);margin-bottom:26px}

/* Callout / key-facts box */
.callout{background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--brass);border-radius:12px;padding:18px 22px;margin:26px 0;box-shadow:var(--shadow-sm)}
.callout .ttl{font-family:var(--sans);font-weight:700;color:var(--ink);font-size:15px;margin-bottom:8px;letter-spacing:.01em}
.callout p:last-child,.callout ul:last-child{margin-bottom:0}

/* Quick facts grid */
.facts{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:28px 0}
@media(max-width:560px){.facts{grid-template-columns:1fr 1fr}}
.fact{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px}
.fact b{display:block;font-family:var(--serif);font-size:26px;color:var(--brass-deep);line-height:1}
.fact span{font-size:13px;color:var(--muted);margin-top:6px;display:block}

/* CTA box (Exchange focal point) */
.cta-box{position:relative;overflow:hidden;border-radius:18px;padding:34px 30px;margin:44px 0;color:#fff;background:linear-gradient(135deg,#2a2418,#6a4f28 62%,#a9803f);box-shadow:var(--shadow)}
.cta-box h2{color:#fff;font-family:var(--serif);font-size:28px;margin:0 0 10px;letter-spacing:-.01em}
.cta-box p{color:rgba(255,255,255,.92);margin-bottom:20px;font-size:16.5px}
.cta-box .btns{display:flex;gap:12px;flex-wrap:wrap}
.cta-btn{display:inline-flex;align-items:center;gap:8px;padding:13px 24px;border-radius:999px;font-weight:600;font-size:15.5px;text-decoration:none;border:1px solid transparent}
.cta-btn.primary{background:#fff;color:#2c2009}
.cta-btn.ghost{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.5);color:#fff;backdrop-filter:blur(6px)}
.cta-btn:hover{transform:translateY(-1px)}

/* FAQ */
.faq{margin:40px 0 8px}
.faq h2{margin-bottom:6px}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;list-style:none;padding:18px 2px;font-family:var(--serif);font-size:19px;color:var(--ink);display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--brass-deep);font-size:24px;font-weight:400;line-height:1}
.faq details[open] summary::after{content:"\2013"}
.faq details .a{padding:0 2px 18px;color:var(--body);font-size:16px}

/* Related guides */
.related{margin:48px 0 10px;border-top:1px solid var(--line);padding-top:30px}
.related h2{font-size:22px;margin-bottom:16px}
.rel-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
@media(max-width:560px){.rel-grid{grid-template-columns:1fr}}
.rel-card{display:block;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px 18px;text-decoration:none;box-shadow:var(--shadow-sm);transition:transform .15s,border-color .15s}
.rel-card:hover{transform:translateY(-2px);border-color:var(--brass)}
.rel-card .k{display:block;font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--brass-deep);font-weight:600}
.rel-card .t{display:block;font-family:var(--serif);font-size:18px;color:var(--ink);margin-top:5px;line-height:1.2}

/* Hub index */
.hub-hero{padding:50px 0 10px;text-align:center}
.hub-hero h1{font-family:var(--serif);font-weight:600;color:var(--ink);font-size:clamp(36px,6vw,58px);line-height:1.06;letter-spacing:-.02em;margin-bottom:16px}
.hub-hero p{font-size:19px;color:var(--muted);max-width:620px;margin:0 auto}
.cluster{margin:44px 0}
.cluster h2{font-family:var(--serif);font-size:28px;color:var(--ink);margin-bottom:6px}
.cluster .sub{color:var(--muted);font-size:15px;margin-bottom:18px}
.hub-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
@media(max-width:620px){.hub-grid{grid-template-columns:1fr}}

/* Footer */
footer.gfoot{background:var(--paper-soft);border-top:1px solid var(--line);margin-top:50px;padding:40px 0 34px;font-size:14.5px}
.gfoot-in{max-width:1080px;margin:0 auto;padding:0 22px;display:flex;flex-wrap:wrap;gap:28px;justify-content:space-between}
.gfoot a{color:var(--body)}.gfoot a:hover{color:var(--brass-deep)}
.gfoot .muted{color:var(--muted)}
.gfoot-bottom{max-width:1080px;margin:26px auto 0;padding:18px 22px 0;border-top:1px solid var(--line);color:var(--muted);font-size:12.5px;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between}