:root{
  --navy:#071b31;
  --ink:#0a2540;
  --muted:#425466;
  --soft:#f6f9fc;
  --line:#e3e8ee;
  --indigo:#533afd;
  --indigo-press:#4434d4;
  --green:#2fd17c;
  --white:#fff;
  --shadow:0 24px 70px rgba(50,50,93,.16),0 10px 24px rgba(0,0,0,.08);
  --font:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--white);-webkit-font-smoothing:antialiased;line-height:1.6}
a{color:var(--indigo);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;display:block}

/* Nav */
.gnav{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.86);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.gnav-inner{width:min(1100px,100%);margin:0 auto;padding:16px 24px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.gbrand{display:flex;align-items:center;gap:12px;font-weight:760;font-size:22px;letter-spacing:-.03em;color:var(--ink)}
.gbrand:hover{text-decoration:none}
.gbrand img{width:34px;height:34px;border-radius:9px;box-shadow:0 6px 16px rgba(83,58,253,.22)}
.gnav-links{display:flex;align-items:center;gap:26px;font-size:15px;font-weight:520}
.gnav-links a{color:#0b2340;opacity:.9}
.gnav-links a:hover{opacity:1;color:var(--indigo);text-decoration:none}
.gbtn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 22px;border-radius:999px;font-size:15px;font-weight:720;line-height:1;background:linear-gradient(180deg,var(--indigo),var(--indigo-press));color:#fff;box-shadow:0 12px 28px rgba(83,58,253,.28);transition:transform .2s}
.gbtn:hover{transform:translateY(-1px);text-decoration:none}
@media(max-width:720px){.gnav-links{display:none}}

/* Article */
.wrap{width:min(760px,100%);margin:0 auto;padding:0 24px}
.breadcrumb{font-size:13px;color:var(--muted);margin:28px 0 10px}
.breadcrumb a{color:var(--muted)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--indigo);font-size:14px;font-weight:760;margin:14px 0}
.eyebrow::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 0 5px rgba(47,209,124,.16)}
h1{font-size:42px;line-height:1.1;letter-spacing:-.04em;margin:0 0 18px;font-weight:640;color:#081f3c}
.lede{font-size:20px;line-height:1.5;color:#213b58;margin:0 0 8px}
.byline{font-size:14px;color:var(--muted);margin:18px 0 30px;padding-bottom:24px;border-bottom:1px solid var(--line)}
.article h2{font-size:27px;line-height:1.2;letter-spacing:-.03em;margin:44px 0 14px;color:#081f3c}
.article h3{font-size:20px;margin:30px 0 10px;color:#0a2540}
.article p{font-size:17px;line-height:1.72;color:#22364d;margin:0 0 18px}
.article ul,.article ol{font-size:17px;line-height:1.72;color:#22364d;padding-left:22px;margin:0 0 20px}
.article li{margin:0 0 9px}
.article strong{color:#0a2540}
.article a{font-weight:600}

/* Callout / CTA card */
.callout{background:var(--soft);border:1px solid var(--line);border-radius:14px;padding:24px 26px;margin:30px 0}
.callout p{margin:0 0 6px;font-size:16px}
.cta-card{background:linear-gradient(180deg,#08233e,#06182b);color:#fff;border-radius:16px;padding:34px;margin:44px 0;text-align:center;box-shadow:var(--shadow)}
.cta-card h3{margin:0 0 10px;font-size:24px;color:#fff;letter-spacing:-.02em}
.cta-card p{margin:0 auto 22px;color:#c7d6e8;max-width:460px;font-size:16px}
.cta-card .gbtn{background:#fff;color:var(--indigo-press);box-shadow:0 12px 28px rgba(0,0,0,.28)}

/* Table */
.tbl{width:100%;border-collapse:collapse;margin:22px 0;font-size:15px;overflow:hidden;border:1px solid var(--line);border-radius:12px}
.tbl th,.tbl td{text-align:left;padding:13px 16px;border-bottom:1px solid var(--line)}
.tbl th{background:var(--soft);font-weight:700;color:#0a2540}
.tbl tr:last-child td{border-bottom:0}

/* FAQ */
.faq{margin:38px 0}
.faq details{border:1px solid var(--line);border-radius:12px;padding:4px 20px;margin-bottom:12px;background:#fff}
.faq summary{cursor:pointer;font-weight:700;font-size:17px;color:#0a2540;padding:16px 0;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";float:right;color:var(--indigo);font-weight:760}
.faq details[open] summary::after{content:"–"}
.faq details p{padding:0 0 18px;margin:0;color:#22364d;font-size:16px;line-height:1.65}

/* Related */
.related{margin:46px 0}
.related h2{font-size:22px;margin:0 0 16px}
.related-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.related-card{display:block;border:1px solid var(--line);border-radius:12px;padding:18px 20px;background:#fff;transition:box-shadow .2s,transform .2s}
.related-card:hover{box-shadow:var(--shadow);transform:translateY(-2px);text-decoration:none}
.related-card b{display:block;color:#081f3c;font-size:16px;margin-bottom:6px}
.related-card span{color:var(--muted);font-size:14px}
@media(max-width:620px){.related-grid{grid-template-columns:1fr}h1{font-size:32px}.lede{font-size:18px}}

/* Guides index */
.hub-hero{background:linear-gradient(180deg,#fff,var(--soft));border-bottom:1px solid var(--line);padding:52px 0 40px}
.hub-grid{width:min(1100px,100%);margin:0 auto;padding:40px 24px 60px;display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.hub-card{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:16px;padding:26px;background:#fff;transition:box-shadow .2s,transform .2s}
.hub-card:hover{box-shadow:var(--shadow);transform:translateY(-3px);text-decoration:none}
.hub-tag{font-size:12px;font-weight:760;text-transform:uppercase;letter-spacing:.05em;color:var(--indigo);margin-bottom:12px}
.hub-card h2{font-size:20px;line-height:1.25;margin:0 0 10px;color:#081f3c}
.hub-card p{font-size:15px;color:var(--muted);margin:0;flex:1}
.hub-card .more{margin-top:16px;color:var(--indigo);font-weight:700;font-size:15px}
@media(max-width:820px){.hub-grid{grid-template-columns:1fr}}

/* Footer */
.gfooter{background:var(--navy);color:#9db0c6;margin-top:56px;padding:40px 24px 30px}
.gfooter-inner{width:min(1100px,100%);margin:0 auto;display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;align-items:center}
.gfooter-brand{display:flex;align-items:center;gap:12px;color:#fff;font-weight:760;font-size:18px}
.gfooter-brand img{width:30px;height:30px;border-radius:8px}
.gfooter-links{display:flex;gap:20px;flex-wrap:wrap;font-size:14px}
.gfooter-links a{color:#9db0c6}
.gfooter-links a:hover{color:#fff}
.gfooter-copy{width:min(1100px,100%);margin:22px auto 0;padding-top:18px;border-top:1px solid rgba(255,255,255,.1);font-size:13px;color:#73859c}