/* Best AI Match — shared stylesheet for content pages */
:root {
  --bg-dark: #f8fafc; --bg-card: #ffffff; --bg-elevated: #f1f5f9;
  --text-primary: #0f172a; --text-secondary: #475569; --text-muted: #94a3b8;
  --accent: #4f46e5; --accent-light: #6366f1; --accent-violet: #8b5cf6;
  --accent-cyan: #0891b2; --accent-green: #059669; --accent-amber: #d97706; --danger: #dc2626;
  --border: #e2e8f0; --border-subtle: #eef2f6; --radius: 10px; --radius-lg: 16px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --shadow-sm: 0 1px 3px rgba(15,23,42,0.06); --shadow-md: 0 4px 16px rgba(15,23,42,0.08);
  --hub-glow: rgba(99,102,241,0.12);
}
[data-theme="dark"] {
  --bg-dark: #080d1a; --bg-card: #0f172a; --bg-elevated: #1e293b;
  --text-primary: #f1f5f9; --text-secondary: #cbd5e1; --text-muted: #64748b;
  --accent: #6366f1; --accent-light: #818cf8; --accent-violet: #8b5cf6;
  --accent-cyan: #06b6d4; --accent-green: #10b981; --accent-amber: #f59e0b; --danger: #ef4444;
  --border: #1e293b; --border-subtle: #15203a;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3); --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --hub-glow: rgba(99,102,241,0.18);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); background: var(--bg-dark); color: var(--text-primary); line-height: 1.65; -webkit-font-smoothing: antialiased; }
a { color: var(--accent-light); text-decoration: none; }
a:hover { text-decoration: underline; }
.container { max-width: 1080px; margin: 0 auto; padding: 0 1.5rem; }
.container--narrow { max-width: 760px; }

.site-header { position: sticky; top: 0; z-index: 100; background: color-mix(in srgb, var(--bg-dark) 88%, transparent); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); }
.site-header__inner { display: flex; align-items: center; gap: 1.5rem; height: 64px; }
.brand { display: flex; align-items: center; gap: 0.55rem; font-weight: 800; font-size: 1.05rem; letter-spacing: -0.02em; color: var(--text-primary); }
.brand:hover { text-decoration: none; }
.brand__mark { color: var(--accent-light); display: flex; }
.site-nav { display: flex; gap: 1.4rem; margin-left: auto; }
.site-nav a { font-size: 0.9rem; font-weight: 500; color: var(--text-secondary); }
.site-nav a:hover { color: var(--text-primary); text-decoration: none; }
.theme-toggle { background: none; border: 1px solid var(--border); border-radius: 8px; width: 36px; height: 36px; display: inline-flex; align-items: center; justify-content: center; cursor: pointer; color: var(--text-secondary); }
.theme-toggle:hover { background: var(--bg-elevated); }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 0.4rem; font-family: var(--font); font-weight: 600; font-size: 0.9rem; padding: 0.6rem 1.1rem; border-radius: 8px; border: 1px solid transparent; cursor: pointer; transition: all 0.15s; }
.btn:hover { text-decoration: none; }
.btn--primary { background: var(--accent); color: #fff; }
.btn--primary:hover { background: var(--accent-light); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn--secondary { background: transparent; color: var(--text-primary); border-color: var(--border); }
.btn--secondary:hover { background: var(--bg-elevated); }
.btn--sm { padding: 0.45rem 0.85rem; font-size: 0.82rem; }

.page-hero { padding: 3rem 0 1.5rem; }
.page-hero .eyebrow { font-size: 0.72rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent-light); }
.page-hero h1 { font-size: clamp(1.9rem, 4vw, 2.8rem); font-weight: 900; letter-spacing: -0.03em; margin: 0.6rem 0; line-height: 1.1; }
.page-hero .lede { font-size: 1.1rem; color: var(--text-secondary); max-width: 680px; }
.page-hero .lede strong { color: var(--text-primary); }

.content { padding: 1rem 0 3rem; }
.content h2 { font-size: 1.5rem; font-weight: 800; letter-spacing: -0.02em; margin: 2.5rem 0 1rem; }
.content h3 { font-size: 1.15rem; font-weight: 700; margin: 1.75rem 0 0.6rem; }
.content p { margin: 0.85rem 0; color: var(--text-secondary); }
.content ul, .content ol { margin: 0.85rem 0 0.85rem 1.25rem; color: var(--text-secondary); }
.content li { margin: 0.4rem 0; }
.content strong { color: var(--text-primary); }

.callout { background: var(--bg-card); border: 1px solid var(--border); border-left: 4px solid var(--accent-light); border-radius: var(--radius); padding: 1.1rem 1.4rem; margin: 1.5rem 0; }
.callout--answer { border-left-color: var(--accent-green); }
.callout p:first-child { margin-top: 0; } .callout p:last-child { margin-bottom: 0; }

.data-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; margin: 1.25rem 0; }
.data-table th { text-align: left; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--text-muted); padding: 0.7rem 0.85rem; border-bottom: 2px solid var(--border); background: var(--bg-elevated); }
.data-table td { padding: 0.7rem 0.85rem; border-bottom: 1px solid var(--border-subtle); color: var(--text-secondary); }
.data-table tr:hover td { background: var(--bg-elevated); }
.data-table .num { text-align: right; font-variant-numeric: tabular-nums; }
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius-lg); }
.table-wrap .data-table { margin: 0; min-width: 560px; }

.pmark { display: inline-flex; align-items: center; justify-content: center; width: 1.7em; height: 1.7em; min-width: 1.7em; border-radius: 6px; color: #fff; font-size: 0.62em; font-weight: 800; flex-shrink: 0; font-family: var(--font); line-height: 1; vertical-align: middle; }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; margin: 1.5rem 0; }
.split-col { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 1.4rem; }
.split-col h3 { margin-top: 0; }
.split-col ul { list-style: none; margin-left: 0; }
.split-col li { display: flex; align-items: flex-start; gap: 0.5rem; }
.ic { flex-shrink: 0; margin-top: 3px; }
.ic-pro { color: var(--accent-green); } .ic-con { color: var(--accent-amber); }

.site-footer { background: var(--bg-card); border-top: 1px solid var(--border); padding: 2.5rem 0 1.5rem; margin-top: 2rem; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 2rem; }
.footer-col h4 { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-muted); margin-bottom: 0.9rem; }
.footer-col a { display: block; color: var(--text-secondary); font-size: 0.9rem; padding: 0.25rem 0; }
.footer-col a:hover { color: var(--accent-light); }
.footer-brand__desc { color: var(--text-muted); font-size: 0.88rem; margin: 0.6rem 0; max-width: 280px; }
.footer-bottom { border-top: 1px solid var(--border); margin-top: 2rem; padding-top: 1.5rem; font-size: 0.82rem; color: var(--text-muted); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 0.5rem; }

.crumbs { font-size: 0.82rem; color: var(--text-muted); padding: 1.25rem 0 0; }
.crumbs a { color: var(--text-muted); } .crumbs a:hover { color: var(--accent-light); }

@media (max-width: 800px) { .split, .footer-grid { grid-template-columns: 1fr; } .site-nav { display: none; } }