/* Agent Gateway — Learn hub shared identity (The Gate).
   Same site as mandategate.com → shares the :root on purpose (the clone-trap
   rule applies to cross-language landing pages, not pages within one site). */
:root {
  --bg: #07090C; --bg-soft: #0B0E13; --surface: #0F1318;
  --border: #222A33; --border-soft: #1A2027;
  --text: #E9EEF3; --muted: #8B97A6; --muted-dim: #5C6675;
  --allow: #34E29B; --allow-dim: #1C7A56; --deny: #FF5C5C; --review: #F7B955;
  --glow: rgba(52, 226, 155, 0.42);
  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", monospace;
  --maxw: 1140px; --readw: 720px; --r: 12px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { background: var(--bg); color: var(--text); font-family: var(--font-display); line-height: 1.65; -webkit-font-smoothing: antialiased; }
a { color: var(--allow); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 26px; }
.read { max-width: var(--readw); margin: 0 auto; padding: 0 26px; }
.mono { font-family: var(--font-mono); }

/* nav */
#nav { position: sticky; top: 0; z-index: 40; background: rgba(7,9,12,0.82); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border-soft); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 600; letter-spacing: -0.01em; font-size: 16px; color: var(--text); }
.brand:hover { text-decoration: none; }
.brand-mark { width: 24px; height: 24px; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { color: var(--muted); font-size: 14px; font-weight: 500; transition: color .15s; }
.nav-links a:hover { color: var(--text); text-decoration: none; }
.nav-cta { padding: 8px 16px; border: 1px solid var(--border); border-radius: 9px; color: var(--text) !important; }
.nav-cta:hover { background: rgba(52,226,155,.08); border-color: var(--allow); }
@media (max-width: 720px) { .nav-links a:not(.nav-cta) { display: none; } }

/* buttons */
.btn { display: inline-flex; align-items: center; gap: 9px; font-family: var(--font-display); font-weight: 600; font-size: 14.5px; padding: 12px 22px; border-radius: 10px; border: 1px solid transparent; cursor: pointer; transition: background .15s, border-color .15s, transform .05s; }
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--allow); color: #04130C; box-shadow: 0 8px 30px -10px var(--glow); }
.btn-primary:hover { background: #4af0ac; }
.btn-ghost { background: transparent; border-color: var(--border); color: var(--text); }
.btn-ghost:hover { border-color: var(--allow); }

/* breadcrumb */
.crumb { font-family: var(--font-mono); font-size: 12.5px; color: var(--muted-dim); margin: 40px 0 0; }
.crumb a { color: var(--muted); }

/* hub header */
.hub-head { padding: 48px 0 26px; }
.eyebrow { font-family: var(--font-mono); font-size: 12.5px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--allow); }
.hub-head h1 { font-size: clamp(30px, 5vw, 48px); font-weight: 700; letter-spacing: -0.03em; line-height: 1.06; margin: 16px 0 14px; max-width: 18ch; }
.hub-head p { color: var(--muted); font-size: 17px; max-width: 64ch; }

/* article cards */
.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; padding: 14px 0 30px; }
@media (max-width: 760px) { .cards { grid-template-columns: 1fr; } }
.card { display: block; background: linear-gradient(180deg, var(--surface), var(--bg-soft)); border: 1px solid var(--border); border-radius: 16px; padding: 24px; transition: border-color .15s, transform .08s; }
.card:hover { border-color: var(--allow-dim); transform: translateY(-2px); text-decoration: none; }
.card .kind { font-family: var(--font-mono); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--allow); }
.card h2 { font-size: 20px; font-weight: 600; letter-spacing: -0.01em; margin: 12px 0 8px; color: var(--text); line-height: 1.25; }
.card p { color: var(--muted); font-size: 14.5px; line-height: 1.55; }
.card .read-on { display: inline-block; margin-top: 14px; font-family: var(--font-mono); font-size: 12.5px; color: var(--muted-dim); }
.card:hover .read-on { color: var(--allow); }

/* article header */
.art-head { padding: 8px 0 6px; }
.art-head .kind { font-family: var(--font-mono); font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--allow); }
.art-head h1 { font-size: clamp(28px, 4.4vw, 42px); font-weight: 700; letter-spacing: -0.03em; line-height: 1.1; margin: 16px 0 14px; }
.art-meta { font-family: var(--font-mono); font-size: 12.5px; color: var(--muted-dim); display: flex; gap: 16px; flex-wrap: wrap; }

/* TL;DR answer block (AEO extractable) */
.tldr { margin: 28px 0; padding: 20px 22px; border: 1px solid var(--allow-dim); background: rgba(52,226,155,.05); border-radius: 12px; }
.tldr h2 { font-family: var(--font-mono); font-size: 11.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--allow); margin: 0 0 9px; }
.tldr p { color: var(--text); font-size: 16px; line-height: 1.6; }

/* article prose */
.prose { padding: 8px 0 10px; }
.prose h2 { font-size: 25px; font-weight: 700; letter-spacing: -0.02em; margin: 40px 0 14px; line-height: 1.2; }
.prose h3 { font-size: 19px; font-weight: 600; letter-spacing: -0.01em; margin: 28px 0 10px; }
.prose p { color: #C7D0DA; font-size: 16.5px; margin: 14px 0; }
.prose ul, .prose ol { color: #C7D0DA; font-size: 16.5px; margin: 14px 0; padding-left: 24px; }
.prose li { margin: 8px 0; }
.prose strong { color: var(--text); font-weight: 600; }
.prose a { color: var(--allow); }
.prose blockquote { margin: 20px 0; padding: 4px 18px; border-left: 3px solid var(--allow-dim); color: var(--muted); font-style: italic; }
.prose code { font-family: var(--font-mono); font-size: 0.88em; background: var(--bg-soft); border: 1px solid var(--border-soft); border-radius: 6px; padding: 1px 6px; color: var(--allow); }

/* comparison / data tables */
.tbl-wrap { overflow-x: auto; margin: 22px 0; border: 1px solid var(--border); border-radius: 12px; }
table.cmp { width: 100%; border-collapse: collapse; font-size: 14.5px; }
table.cmp th, table.cmp td { text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--border-soft); vertical-align: top; }
table.cmp thead th { background: var(--bg-soft); font-family: var(--font-mono); font-size: 12px; letter-spacing: .04em; text-transform: uppercase; color: var(--muted); }
table.cmp tr:last-child td { border-bottom: none; }
table.cmp td:first-child { color: var(--text); font-weight: 500; }

/* steps (how-to) */
ol.steps { list-style: none; padding: 0; margin: 22px 0; counter-reset: s; }
ol.steps > li { position: relative; padding: 0 0 22px 52px; counter-increment: s; }
ol.steps > li::before { content: counter(s); position: absolute; left: 0; top: 0; width: 32px; height: 32px; border-radius: 8px; background: var(--bg-soft); border: 1px solid var(--allow-dim); color: var(--allow); font-family: var(--font-mono); font-size: 14px; font-weight: 600; display: flex; align-items: center; justify-content: center; }
ol.steps > li h3 { margin: 4px 0 6px; }

/* stat highlight */
.stat { font-family: var(--font-mono); color: var(--allow); font-weight: 600; }

/* FAQ */
.faq { margin: 36px 0 10px; }
.faq h2 { font-size: 25px; font-weight: 700; letter-spacing: -0.02em; margin: 0 0 14px; }
.faq details { border: 1px solid var(--border-soft); border-radius: 10px; padding: 4px 18px; margin: 10px 0; background: var(--surface); }
.faq summary { cursor: pointer; padding: 14px 0; font-weight: 600; font-size: 16px; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--allow); font-family: var(--font-mono); font-size: 20px; line-height: 1; }
.faq details[open] summary::after { content: "−"; }
.faq details p { color: #C7D0DA; font-size: 15.5px; padding: 0 0 16px; margin: 0; }

/* CTA box */
.cta-box { margin: 40px 0 10px; padding: 28px; border: 1px solid var(--border); background: linear-gradient(180deg, var(--surface), var(--bg-soft)); border-radius: 16px; text-align: center; }
.cta-box h2 { font-size: 22px; font-weight: 700; letter-spacing: -0.02em; margin: 0 0 8px; }
.cta-box p { color: var(--muted); font-size: 15px; max-width: 52ch; margin: 0 auto 18px; }
.cta-row { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* related */
.related { margin: 44px 0 0; padding-top: 26px; border-top: 1px solid var(--border-soft); }
.related h3 { font-family: var(--font-mono); font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--muted-dim); margin-bottom: 14px; }
.related a { display: block; color: var(--muted); font-size: 15px; margin: 9px 0; }
.related a:hover { color: var(--allow); }

/* footer */
footer { border-top: 1px solid var(--border-soft); padding: 56px 0 40px; background: var(--bg-soft); margin-top: 80px; }
.foot-grid { display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.foot-brand { max-width: 34ch; }
.foot-brand p { color: var(--muted-dim); font-size: 13.5px; line-height: 1.6; margin-top: 14px; }
.foot-links { display: flex; gap: 56px; flex-wrap: wrap; }
.foot-col h5 { font-size: 12px; color: var(--muted-dim); font-family: var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 14px; }
.foot-col a { display: block; color: var(--muted); font-size: 14px; margin-bottom: 10px; transition: color .15s; }
.foot-col a:hover { color: var(--text); }
.foot-base { margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--border-soft); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; color: var(--muted-dim); font-size: 13px; }