:root{
  --ink:#0f172a; --body:#334155; --muted:#64748b; --line:#e2e8f0;
  --bg:#ffffff; --alt:#f8fafc; --navy:#0f172a;
  --brand:#4f46e5; --brand-dark:#4338ca; --brand-tint:#eef2ff;
  --radius:12px; --max:1120px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--body);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
h1,h2,h3{color:var(--ink);line-height:1.2;letter-spacing:-.02em;font-weight:700}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.btn{display:inline-flex;align-items:center;gap:8px;border-radius:10px;padding:11px 20px;font-weight:600;font-size:15px;transition:.15s;cursor:pointer;border:1px solid transparent}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark)}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:#cbd5e1;background:var(--alt)}
.btn-light{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.2)}
.btn-light:hover{background:rgba(255,255,255,.18)}
.eyebrow{color:var(--brand);font-weight:600;font-size:13px;text-transform:uppercase;letter-spacing:.08em}

/* nav */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.85);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:9px;font-weight:700;color:var(--ink);font-size:18px;letter-spacing:-.02em}
.logo{width:26px;height:26px;border-radius:7px;background:var(--brand);display:grid;place-items:center;color:#fff;font-weight:700;font-size:15px}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{color:var(--body);font-size:15px;font-weight:500}
.nav-links a:hover{color:var(--ink)}
.nav-cta{display:flex;align-items:center;gap:12px}
.menu-btn{display:none;background:none;border:0;font-size:22px;color:var(--ink)}

/* hero */
.hero{background:linear-gradient(180deg,var(--alt),#fff);border-bottom:1px solid var(--line)}
.hero-in{padding:88px 0 72px;text-align:center;max-width:820px;margin:0 auto}
.hero h1{font-size:clamp(34px,5vw,54px)}
.hero p.sub{font-size:clamp(17px,2vw,20px);color:var(--muted);margin:22px auto 0;max-width:640px}
.hero-cta{display:flex;gap:14px;justify-content:center;margin-top:32px;flex-wrap:wrap}
.hero-note{margin-top:16px;font-size:14px;color:var(--muted)}
.shot{max-width:960px;margin:48px auto 0;border-radius:16px;border:1px solid var(--line);box-shadow:0 24px 60px -30px rgba(15,23,42,.35);overflow:hidden;background:#fff}

/* sections */
section.band{padding:80px 0}
.alt{background:var(--alt)}
.center{text-align:center;max-width:680px;margin:0 auto 52px}
.center h2{font-size:clamp(26px,3.4vw,38px)}
.center p{color:var(--muted);font-size:17px;margin-top:14px}
.grid{display:grid;gap:22px}
.g3{grid-template-columns:repeat(3,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.card .ic{width:42px;height:42px;border-radius:10px;background:var(--brand-tint);color:var(--brand);display:grid;place-items:center;font-size:20px;margin-bottom:16px}
.card h3{font-size:18px;margin-bottom:8px}
.card p{color:var(--muted);font-size:15px}
.steps{counter-reset:s}
.step{position:relative;padding-left:64px}
.step .n{position:absolute;left:0;top:0;width:44px;height:44px;border-radius:50%;background:var(--brand);color:#fff;display:grid;place-items:center;font-weight:700;font-size:18px}
.step h3{font-size:19px;margin-bottom:6px}
.step p{color:var(--muted)}

/* cta band */
.cta{background:var(--navy);color:#fff;text-align:center;padding:76px 0}
.cta h2{color:#fff;font-size:clamp(26px,3.4vw,38px)}
.cta p{color:#cbd5e1;margin:14px auto 0;max-width:520px}
.cta .hero-cta{margin-top:28px}

/* faq */
.faq details{border:1px solid var(--line);border-radius:10px;padding:0;margin-bottom:12px;background:#fff}
.faq summary{cursor:pointer;list-style:none;padding:18px 22px;font-weight:600;color:var(--ink);display:flex;justify-content:space-between;align-items:center;font-size:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--brand);font-size:22px;font-weight:400}
.faq details[open] summary::after{content:"–"}
.faq .a{padding:0 22px 20px;color:var(--muted)}

/* learn cards */
.tut{grid-template-columns:repeat(3,1fr)}
.tut a{display:block;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;transition:.15s}
.tut a:hover{border-color:#cbd5e1;transform:translateY(-2px);box-shadow:0 12px 30px -18px rgba(15,23,42,.3)}
.thumb{aspect-ratio:16/9;background:linear-gradient(135deg,#312e81,#4f46e5);display:grid;place-items:center;color:#fff;font-size:34px}
.tut .body{padding:18px 20px}
.tut h3{font-size:16px;margin-bottom:6px}
.tut p{color:var(--muted);font-size:14px}
.badge{display:inline-block;font-size:12px;font-weight:600;color:var(--brand);background:var(--brand-tint);padding:3px 9px;border-radius:20px;margin-top:12px}

/* footer */
footer{background:var(--navy);color:#94a3b8;padding:56px 0 32px}
footer .cols{display:grid;grid-template-columns:2fr 1fr 1fr;gap:32px;margin-bottom:36px}
footer .brand{color:#fff}
footer h4{color:#e2e8f0;font-size:14px;margin-bottom:14px;font-weight:600}
footer a{display:block;color:#94a3b8;font-size:14px;padding:5px 0}
footer a:hover{color:#fff}
footer .fine{border-top:1px solid rgba(148,163,184,.2);padding-top:24px;font-size:13px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

@media(max-width:860px){
  .nav-links,.nav-cta .btn-ghost{display:none}
  .menu-btn{display:block}
  .g3,.tut{grid-template-columns:1fr}
  footer .cols{grid-template-columns:1fr 1fr}
  .mobile-open .nav-links{display:flex;position:absolute;top:64px;left:0;right:0;flex-direction:column;background:#fff;border-bottom:1px solid var(--line);padding:16px 24px;gap:16px}
}