:root{
  --ink:#1a2332; --muted:#5b6b7f; --bg:#ffffff; --alt:#f4f6f9;
  --brand:#1f5eff; --brand-dark:#1748c4; --accent:#ffb020;
  --card:#ffffff; --line:#e3e9f0; --radius:14px;
}
*{box-sizing:border-box; margin:0; padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--ink);line-height:1.6;background:var(--bg)}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
.narrow{max-width:640px}

/* header */
.site-header{position:sticky;top:0;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);z-index:50}
.header-in{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{display:flex;align-items:center;gap:9px;font-weight:800;font-size:1.25rem;color:var(--ink);text-decoration:none}
.logo-ring{width:22px;height:22px;border-radius:50%;border:4px solid var(--brand);border-top-color:var(--accent);display:inline-block}
.nav{display:flex;align-items:center;gap:18px}
.nav a{color:var(--ink);text-decoration:none;font-weight:600;font-size:.95rem}
.nav a:hover{color:var(--brand)}

/* buttons */
.btn{display:inline-block;background:var(--brand);color:#fff;border:none;border-radius:10px;padding:11px 22px;font-weight:700;font-size:1rem;cursor:pointer;text-decoration:none;transition:background .15s}
.btn:hover{background:var(--brand-dark)}
.btn-sm{padding:8px 16px;font-size:.9rem}
.btn-big{padding:14px 30px;font-size:1.05rem}
.btn-ghost{background:#fff;color:var(--brand);border:2px solid var(--brand)}
.btn-ghost:hover{background:#eef3ff}

/* hero */
.hero{padding:84px 0 64px;background:linear-gradient(180deg,#eef3ff 0%,#fff 100%);text-align:center}
.kicker{text-transform:uppercase;letter-spacing:.12em;font-size:.8rem;font-weight:700;color:var(--brand);margin-bottom:14px}
.hero h1{font-size:2.9rem;line-height:1.15;letter-spacing:-.02em;margin-bottom:18px}
.lede{font-size:1.2rem;color:var(--muted);max-width:640px;margin:0 auto 30px}
.hero-cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* strip */
.strip{background:var(--ink);color:#fff}
.strip-in{display:flex;gap:28px;justify-content:space-between;padding:22px 20px;flex-wrap:wrap}
.strip-in div{display:flex;flex-direction:column;gap:2px}
.strip-in strong{font-size:1.02rem}
.strip-in span{color:#aeb9c7;font-size:.92rem}

/* sections */
.section{padding:72px 0}
.section-alt{background:var(--alt)}
.section h2{font-size:2rem;letter-spacing:-.01em;margin-bottom:10px;text-align:center}
.section-sub{text-align:center;color:var(--muted);max-width:620px;margin:0 auto 40px;font-size:1.08rem}

/* cards */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.card h3{font-size:1.2rem;margin-bottom:10px}
.card p{color:var(--muted)}

/* steps */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.step-n{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:50%;background:var(--brand);color:#fff;font-weight:800;margin-bottom:14px}
.step h3{margin-bottom:8px}
.step p{color:var(--muted)}

/* demo chat */
.demo-shell{max-width:560px;margin:0 auto;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;box-shadow:0 12px 40px rgba(26,35,50,.08)}
.demo-head{display:flex;align-items:center;gap:8px;padding:14px 18px;background:var(--ink);color:#fff;font-weight:700}
.demo-dot{width:10px;height:10px;border-radius:50%;background:#3ddc84}
.demo-live{margin-left:auto;font-size:.8rem;color:#3ddc84;font-weight:600}
.demo-log{height:320px;overflow-y:auto;padding:18px;display:flex;flex-direction:column;gap:12px;background:#fbfcfe}
.msg{max-width:82%;padding:10px 15px;border-radius:14px;font-size:.96rem;line-height:1.5}
.msg.bot{background:#eef3ff;align-self:flex-start;border-bottom-left-radius:4px}
.msg.user{background:var(--brand);color:#fff;align-self:flex-end;border-bottom-right-radius:4px}
.demo-form{display:flex;gap:10px;padding:14px;border-top:1px solid var(--line)}
.demo-form input{flex:1;border:1px solid var(--line);border-radius:10px;padding:11px 14px;font-size:1rem}
.demo-form input:focus{outline:2px solid var(--brand);border-color:var(--brand)}

/* quote form */
.quote-form{display:flex;flex-direction:column;gap:16px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px}
.quote-form label{display:flex;flex-direction:column;gap:6px;font-weight:600}
.quote-form input,.quote-form select,.quote-form textarea{border:1px solid var(--line);border-radius:10px;padding:12px 14px;font-size:1rem;font-family:inherit;font-weight:400}
.quote-form input:focus,.quote-form select:focus,.quote-form textarea:focus{outline:2px solid var(--brand);border-color:var(--brand)}
.form-note{font-size:.88rem;color:var(--muted);text-align:center}

/* pricing */
.price-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:36px;box-shadow:0 12px 40px rgba(26,35,50,.08);text-align:center}
.price-row{display:flex;justify-content:space-between;align-items:center;padding:14px 4px;border-bottom:1px solid var(--line);font-size:1.08rem}
.price-row strong{font-size:1.5rem;color:var(--brand)}
.price-includes{list-style:none;margin:22px 0;text-align:left;display:flex;flex-direction:column;gap:10px}
.price-includes li{padding-left:28px;position:relative;color:var(--muted)}
.price-includes li::before{content:"";position:absolute;left:2px;top:7px;width:14px;height:8px;border-left:3px solid #22b573;border-bottom:3px solid #22b573;transform:rotate(-45deg)}
.price-note{margin-top:16px;color:var(--muted);font-style:italic}

/* footer */
.site-footer{background:var(--ink);color:#fff;padding:44px 0;margin-top:0}
.footer-in{text-align:center;display:flex;flex-direction:column;gap:8px;align-items:center}
.footer-brand{display:flex;align-items:center;gap:9px;font-weight:800;font-size:1.2rem}
.footer-small{color:#aeb9c7;font-size:.88rem}

@media (max-width:640px){
  .hero{padding:60px 0 48px}
  .hero h1{font-size:2.1rem}
  .lede{font-size:1.08rem}
  .nav a:not(.btn){display:none}
  .section{padding:52px 0}
  .quote-form{padding:22px}
}