:root{
  --bg:#ffffff; --bg-soft:#f7f8fc; --bg-elev:#ffffff; --surface:#f3f5fb;
  --text:#0f172a; --text-soft:#475569; --text-faint:#94a3b8;
  --border:#e7ebf3; --border-soft:#eef1f7;
  --primary:#4f46e5; --primary-ink:#4338ca; --primary-soft:#eef2ff;
  --accent:#10b981; --radius:14px; --radius-sm:10px; --maxw:1120px;
  --shadow:0 1px 2px rgba(16,24,40,.04), 0 12px 32px -12px rgba(79,70,229,.18);
}
[data-theme="dark"]{
  --bg:#0b1020; --bg-soft:#0e1426; --bg-elev:#121a30; --surface:#141d35;
  --text:#e8edf7; --text-soft:#9fb0c9; --text-faint:#6b7c98;
  --border:#1e2942; --border-soft:#192238;
  --primary:#818cf8; --primary-ink:#a5b4fc; --primary-soft:#1a2444;
  --accent:#34d399;
  --shadow:0 1px 2px rgba(0,0,0,.4), 0 24px 50px -22px rgba(0,0,0,.6);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;transition:background .25s,color .25s}
a{color:inherit;text-decoration:none}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.muted{color:var(--text-soft)}
.grad{color:var(--primary)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;font-size:14.5px;padding:10px 18px;border-radius:var(--radius-sm);border:1px solid transparent;cursor:pointer;transition:.15s;white-space:nowrap}
.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn-primary:hover{filter:brightness(1.07);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--border)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary)}
.btn-lg{padding:13px 24px;font-size:15.5px;border-radius:12px}
.btn-block{display:flex;width:100%}

/* header */
.site-header{position:sticky;top:0;z-index:40;background:color-mix(in srgb,var(--bg) 86%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--border-soft)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;letter-spacing:-.4px;color:var(--text)}
.brand-mark{width:30px;height:30px;color:var(--primary)}
.brand-text b{color:var(--primary)}
.nav-links{display:flex;align-items:center;gap:22px}
.nav-links a{color:var(--text-soft);font-weight:500;font-size:14.5px}
.nav-links a:hover,.nav-links a.active{color:var(--text)}
.theme-toggle{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:9px;border:1px solid var(--border);background:transparent;color:var(--text-soft);cursor:pointer;transition:.15s}
.theme-toggle:hover{color:var(--primary);border-color:var(--primary)}

/* hero */
.hero{padding:72px 0 40px}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:54px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;background:var(--primary-soft);color:var(--primary-ink);font-size:13px;font-weight:600;padding:6px 14px;border-radius:30px;margin-bottom:22px}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--accent)}
.hero h1{font-size:clamp(38px,5vw,56px);line-height:1.06;letter-spacing:-1.6px;font-weight:800;margin-bottom:18px}
.lead{font-size:19px;color:var(--text-soft);margin-bottom:28px;max-width:520px}
.hero-cta{display:flex;gap:13px;flex-wrap:wrap}
.hero-trust{margin-top:22px;font-size:13.5px;color:var(--text-faint);font-weight:500}
.demo-card{background:var(--bg-elev);border:1px solid var(--border);border-radius:18px;padding:22px;box-shadow:var(--shadow)}
.demo-req{display:flex;align-items:center;gap:9px;background:var(--surface);border-radius:10px;padding:11px 13px;font-size:13.5px;color:var(--text-soft)}
.demo-label{font-size:11px;text-transform:uppercase;letter-spacing:.6px;color:var(--text-faint);margin:16px 0 8px}
.demo-result{background:var(--surface);border:1px solid var(--border-soft);border-radius:12px;padding:16px}
.demo-total{font-size:23px;font-weight:800;margin-bottom:6px}
.demo-total b{color:var(--accent)}
.demo-line{display:flex;justify-content:space-between;font-size:13.5px;color:var(--text-soft);padding:6px 0;border-top:1px solid var(--border-soft)}
.demo-foot{margin-top:12px;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12px;color:var(--text-faint)}

/* features */
.features{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;padding:60px 24px}
.feature .feat-ic{width:46px;height:46px;border-radius:13px;background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.feature .feat-ic svg{width:23px;height:23px}
.feature h3{font-size:16.5px;margin-bottom:6px}
.feature p{font-size:14.5px;color:var(--text-soft)}

/* pricing */
.section-head{text-align:center;margin-bottom:40px}
.section-head h2{font-size:34px;letter-spacing:-.8px;margin-bottom:8px}
.section-head p{color:var(--text-soft);font-size:17px}
.pricing{padding:50px 24px 20px}
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:start}
.plan{position:relative;background:var(--bg-elev);border:1px solid var(--border);border-radius:18px;padding:28px}
.plan-featured{border:2px solid var(--primary);box-shadow:var(--shadow)}
.plan-badge{position:absolute;top:-12px;left:28px;background:var(--primary);color:#fff;font-size:11px;font-weight:700;padding:4px 12px;border-radius:20px}
.plan h4{font-size:18px;color:var(--primary);margin-bottom:5px}
.plan-desc{font-size:13.5px;color:var(--text-soft);min-height:38px}
.plan-price{font-size:34px;font-weight:800;margin:8px 0 4px}
.plan-price span{font-size:15px;color:var(--text-faint);font-weight:500}
.plan-feats{list-style:none;margin:16px 0}
.plan-feats li{font-size:14px;color:var(--text-soft);padding:8px 0;border-bottom:1px solid var(--border-soft);display:flex;gap:8px}
.plan-feats li:before{content:"✓";color:var(--accent);font-weight:800}

/* cta band */
.cta-band{margin:70px 0 0;background:var(--primary);color:#fff}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:46px 24px}
.cta-band h2{font-size:30px;letter-spacing:-.6px;margin-bottom:6px}
.cta-band p{opacity:.9}
.cta-band .btn-primary{background:#fff;color:var(--primary);border-color:#fff}

/* footer */
.site-footer{border-top:1px solid var(--border-soft);background:var(--bg-soft);margin-top:0;padding:46px 0 24px}
.footer-inner{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap}
.footer-brand{max-width:280px}
.footer-brand p{color:var(--text-soft);font-size:14px;margin-top:10px}
.footer-cols{display:flex;gap:54px;flex-wrap:wrap}
.footer-cols h4{font-size:13px;text-transform:uppercase;letter-spacing:.5px;color:var(--text-faint);margin-bottom:12px}
.footer-cols a{display:block;color:var(--text-soft);font-size:14px;padding:4px 0}
.footer-cols a:hover{color:var(--primary)}
.footer-bottom{margin-top:30px;padding-top:20px;border-top:1px solid var(--border-soft);color:var(--text-faint);font-size:13px}

/* docs + generic prose */
.prose{max-width:820px;margin:0 auto;padding:50px 24px 70px}
.prose h1{font-size:36px;letter-spacing:-.6px;margin-bottom:8px}
.prose h2{font-size:22px;margin:34px 0 10px;padding-bottom:8px;border-bottom:1px solid var(--border-soft)}
.prose p,.prose li{color:var(--text-soft)}
.prose code{background:var(--surface);padding:2px 6px;border-radius:5px;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:13px;color:var(--text)}
.prose pre{background:var(--bg-elev);border:1px solid var(--border);border-radius:12px;padding:16px;overflow:auto;margin:14px 0;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:13px;line-height:1.6;color:var(--text)}
.prose table{width:100%;border-collapse:collapse;margin:14px 0}
.prose th,.prose td{text-align:left;padding:9px 12px;border-bottom:1px solid var(--border-soft);font-size:14px}
.pill{display:inline-block;background:var(--surface);border:1px solid var(--border);border-radius:6px;padding:1px 8px;font-size:12px;font-weight:700;color:var(--accent)}

@media(max-width:900px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .features{grid-template-columns:repeat(2,1fr)}
  .plans{grid-template-columns:1fr}
  .nav-links a:not(.btn){display:none}
}