:root{
  --primary:#4f46e5;
  --primary-dark:#4338ca;
  --accent:#7c3aed;
  --ink:#111827;
  --muted:#6b7280;
  --bg:#ffffff;
  --soft:#f5f7ff;
  --radius:14px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
.container{width:min(1120px,92%);margin-inline:auto}
.narrow{width:min(760px,92%)}
.center{text-align:center}
a{color:inherit;text-decoration:none}

/* Nav */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.88);backdrop-filter:blur(10px);border-bottom:1px solid #eef0f6}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{font-weight:800;font-size:1.35rem;letter-spacing:-.02em}
.logo span{color:var(--primary)}
.nav-links{display:flex;align-items:center;gap:28px;font-weight:500;color:#374151}
.nav-links a:hover{color:var(--primary)}
.burger{display:none;background:none;border:0;cursor:pointer;padding:8px}
.burger span{display:block;width:24px;height:2px;background:var(--ink);margin:5px 0;transition:.25s}

/* Buttons */
.btn{display:inline-block;border:0;cursor:pointer;font:inherit;font-weight:600;color:#fff;background:linear-gradient(135deg,var(--primary),var(--accent));padding:14px 28px;border-radius:10px;transition:transform .15s,box-shadow .15s,opacity .15s;box-shadow:0 8px 20px rgba(79,70,229,.28)}
.btn:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(79,70,229,.35)}
.btn:disabled{opacity:.65;cursor:not-allowed;transform:none}
.btn-small{padding:9px 20px;font-size:.92rem;color:#fff!important}
.btn-white{background:#fff;color:var(--primary);box-shadow:0 8px 20px rgba(0,0,0,.18)}

/* Hero */
.hero{padding:96px 0 84px;text-align:center;background:radial-gradient(1000px 420px at 50% -10%,#e9e7ff 0%,transparent 70%),var(--bg)}
.pill{display:inline-block;background:var(--soft);color:var(--primary);font-weight:600;font-size:.85rem;padding:6px 16px;border-radius:999px;margin-bottom:22px;border:1px solid #e0e3ff}
.hero h1{font-size:clamp(2.2rem,5.4vw,3.8rem);line-height:1.1;letter-spacing:-.03em;font-weight:800;max-width:820px;margin:0 auto 20px}
.hero h1 em{font-style:normal;background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{font-size:1.12rem;color:var(--muted);max-width:620px;margin:0 auto 34px}
.fine{margin-top:14px;font-size:.88rem;color:var(--muted)}

/* Form */
.subscribe-form{display:flex;flex-wrap:wrap;gap:10px;max-width:520px;margin:0 auto;position:relative}
.subscribe-form input[type=email]{flex:1 1 260px;padding:15px 18px;font:inherit;border:1.5px solid #d9dcea;border-radius:10px;outline:none;background:#fff;transition:border .15s,box-shadow .15s}
.subscribe-form input[type=email]:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(79,70,229,.15)}
.hp{position:absolute!important;left:-9999px;width:1px;height:1px;opacity:0}
.form-msg{flex-basis:100%;min-height:22px;font-size:.95rem;font-weight:500;text-align:left}
.form-msg.ok{color:#059669}
.form-msg.err{color:#dc2626}
.subscribe-form.light .form-msg.ok{color:#d1fae5}
.subscribe-form.light .form-msg.err{color:#fecaca}

/* Sections */
section{padding:84px 0}
.section-title{text-align:center;font-size:clamp(1.7rem,3.4vw,2.4rem);font-weight:800;letter-spacing:-.02em;margin-bottom:10px}
.section-sub{text-align:center;color:var(--muted);margin-bottom:46px}
.features{background:var(--soft)}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px}
.card{background:#fff;padding:32px 28px;border-radius:var(--radius);box-shadow:0 4px 18px rgba(30,41,90,.06);transition:transform .2s,box-shadow .2s}
.card:hover{transform:translateY(-6px);box-shadow:0 14px 30px rgba(30,41,90,.12)}
.icon{font-size:2rem;width:58px;height:58px;display:grid;place-items:center;background:var(--soft);border-radius:14px;margin-bottom:18px}
.card h3{margin-bottom:8px;font-size:1.15rem}
.card p{color:var(--muted)}

.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:30px;margin-top:44px;text-align:center}
.step span{display:inline-grid;place-items:center;width:52px;height:52px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;font-weight:700;font-size:1.2rem;margin-bottom:14px}
.step h3{margin-bottom:6px}
.step p{color:var(--muted)}

.faq{background:var(--soft)}
.faq .section-title{margin-bottom:34px}
details{background:#fff;border-radius:12px;padding:18px 22px;margin-bottom:12px;box-shadow:0 2px 10px rgba(30,41,90,.05)}
summary{cursor:pointer;font-weight:600;list-style:none;display:flex;justify-content:space-between;align-items:center}
summary::after{content:'+';font-size:1.4rem;color:var(--primary);transition:transform .2s}
details[open] summary::after{transform:rotate(45deg)}
summary::-webkit-details-marker{display:none}
details p{margin-top:12px;color:var(--muted)}

.cta{background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff}
.cta h2{font-size:clamp(1.8rem,3.6vw,2.6rem);font-weight:800;margin-bottom:8px}
.cta p{opacity:.9;margin-bottom:28px}

.footer{padding:34px 0;border-top:1px solid #eef0f6}
.footer-inner{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;color:var(--muted);font-size:.92rem}

/* Mobile */
@media (max-width:760px){
  .burger{display:block}
  .nav-links{position:absolute;top:68px;left:0;right:0;background:#fff;flex-direction:column;padding:20px;gap:18px;border-bottom:1px solid #eef0f6;display:none}
  .nav-links.open{display:flex}
  .hero{padding:64px 0 56px}
  section{padding:60px 0}
  .subscribe-form .btn{flex:1 1 100%}
  .footer-inner{justify-content:center;text-align:center}
}