:root{
  --ink:#181b20;
  --muted:#5b636e;
  --faint:#8a919c;
  --line:#e7e5df;
  --bg:#ffffff;
  --soft:#f7f6f2;
  --accent:#0c6e6b;
  --accent-dark:#0a5a57;
  --accent-soft:#e6f2f1;
  --warn:#b45309;
  --warn-soft:#fef6e7;
  --radius:12px;
  --max:940px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.65;
  margin:0;font-size:17px;
}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
/* ---------- header ---------- */
.site-header{border-bottom:1px solid var(--line);background:var(--bg);position:sticky;top:0;z-index:10}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;min-height:64px;gap:16px}
.brand{font-weight:700;font-size:1.05rem;color:var(--ink);text-decoration:none;letter-spacing:-.01em}
.brand small{font-weight:400;color:var(--faint)}
nav.main{display:flex;gap:4px;flex-wrap:wrap}
nav.main a{color:var(--muted);text-decoration:none;padding:8px 12px;border-radius:8px;font-size:.95rem}
nav.main a:hover{background:var(--soft);color:var(--ink)}
nav.main a[aria-current="page"]{color:var(--ink);font-weight:600}
/* ---------- hero ---------- */
.hero{padding:64px 0 48px}
.hero h1{font-size:2.4rem;line-height:1.15;letter-spacing:-.02em;margin:0 0 16px;max-width:22ch}
.hero p.lede{font-size:1.2rem;color:var(--muted);max-width:38ch;margin:0 0 28px}
.cta-row{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-block;padding:12px 22px;border-radius:10px;font-weight:600;text-decoration:none;font-size:1rem;border:1px solid transparent}
.btn.primary{background:var(--accent);color:#fff}
.btn.primary:hover{background:var(--accent-dark)}
.btn.ghost{border-color:var(--line);color:var(--ink);background:#fff}
.btn.ghost:hover{background:var(--soft)}
.eyebrow{text-transform:uppercase;letter-spacing:.08em;font-size:.8rem;color:var(--accent);font-weight:700;margin:0 0 12px}
/* ---------- sections ---------- */
section.block{padding:40px 0}
section.block.soft{background:var(--soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
h2.section-title{font-size:1.5rem;letter-spacing:-.01em;margin:0 0 8px}
p.section-sub{color:var(--muted);margin:0 0 28px;max-width:60ch}
/* ---------- app cards ---------- */
.app-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:16px}
.app-card{border:1px solid var(--line);border-radius:var(--radius);padding:22px;background:#fff;display:flex;flex-direction:column}
.app-card h3{margin:0 0 6px;font-size:1.1rem;letter-spacing:-.01em}
.app-card .tag{display:inline-block;font-size:.75rem;font-weight:700;color:var(--accent);background:var(--accent-soft);border-radius:6px;padding:2px 8px;margin-bottom:10px;width:fit-content}
.app-card p{color:var(--muted);font-size:.95rem;margin:0 0 12px;flex:1}
.app-card .meta{font-size:.82rem;color:var(--faint);border-top:1px solid var(--line);padding-top:10px}
/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;counter-reset:step}
.step{border:1px solid var(--line);border-radius:var(--radius);padding:22px;background:#fff}
.step::before{counter-increment:step;content:counter(step);display:flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:50%;background:var(--accent);color:#fff;font-weight:700;font-size:.9rem;margin-bottom:12px}
.step h3{margin:0 0 6px;font-size:1.05rem}
.step p{margin:0;color:var(--muted);font-size:.95rem}
/* ---------- pricing ---------- */
.tiers{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;margin:8px 0 8px}
.tier{border:1px solid var(--line);border-radius:var(--radius);padding:26px;background:#fff;display:flex;flex-direction:column;position:relative}
.tier.recommended{border:2px solid var(--accent)}
.tier .flag{position:absolute;top:-13px;left:20px;background:var(--accent);color:#fff;font-size:.75rem;font-weight:700;padding:3px 12px;border-radius:20px;letter-spacing:.02em}
.tier h3{margin:0;font-size:1.15rem}
.tier .for{font-size:.88rem;color:var(--faint);margin:2px 0 12px}
.price{font-size:2rem;font-weight:700;letter-spacing:-.02em;margin:4px 0}
.price .per{font-size:.9rem;font-weight:400;color:var(--muted)}
.tier ul{list-style:none;padding:0;margin:16px 0;flex:1}
.tier li{padding:6px 0 6px 28px;position:relative;font-size:.95rem;color:var(--muted)}
.tier li::before{content:"✓";position:absolute;left:4px;color:var(--accent);font-weight:700}
.tier .btn{margin-top:8px;text-align:center}
.btn.disabled{background:#e9e7e2;color:var(--faint);cursor:default;border-color:transparent}
.note{background:var(--warn-soft);border:1px solid #f0dfb8;border-radius:10px;padding:14px 18px;font-size:.92rem;color:#7c5a1e;margin:20px 0}
.note strong{color:#7c5a1e}
/* ---------- faq ---------- */
.faq details{border:1px solid var(--line);border-radius:10px;padding:16px 20px;margin-bottom:10px;background:#fff}
.faq summary{font-weight:600;cursor:pointer;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";float:right;color:var(--accent);font-weight:700}
.faq details[open] summary::after{content:"–"}
.faq p{color:var(--muted);margin:12px 0 0;font-size:.95rem}
/* ---------- prose pages ---------- */
.prose{max-width:720px}
.prose h1{font-size:2rem;letter-spacing:-.02em;margin:0 0 8px}
.prose .updated{color:var(--faint);font-size:.9rem;margin-bottom:32px}
.prose h2{font-size:1.3rem;margin:2em 0 .5em;letter-spacing:-.01em}
.prose h3{font-size:1.08rem;margin:1.5em 0 .4em}
.prose p,.prose li{color:#333a44}
.prose ul{padding-left:22px}
.prose li{margin-bottom:6px}
.toc{background:var(--soft);border:1px solid var(--line);border-radius:10px;padding:18px 22px;margin:24px 0}
.toc strong{display:block;margin-bottom:8px;font-size:.9rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted)}
.toc ol{margin:0;padding-left:20px}
.toc li{margin-bottom:4px}
.toc a{color:var(--accent);text-decoration:none}
.toc a:hover{text-decoration:underline}
/* ---------- demo ---------- */
.video-card{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;margin-bottom:24px}
.video-card video{width:100%;display:block;background:#000}
.video-card .body{padding:20px 24px}
.video-card h3{margin:0 0 6px}
.video-card p{color:var(--muted);font-size:.95rem;margin:0 0 10px}
.video-card a.dl{font-size:.9rem;color:var(--accent)}
/* ---------- footer ---------- */
footer.site{border-top:1px solid var(--line);margin-top:56px;padding:32px 0 48px;color:var(--faint);font-size:.9rem}
footer.site .wrap{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}
footer.site nav{display:flex;gap:18px;flex-wrap:wrap}
footer.site a{color:var(--muted);text-decoration:none}
footer.site a:hover{color:var(--ink);text-decoration:underline}
footer.site .disclosure{max-width:60ch;margin-top:16px;font-size:.82rem}
/* ---------- responsive ---------- */
@media (max-width:640px){
  body{font-size:16px}
  .hero{padding:44px 0 32px}
  .hero h1{font-size:1.9rem}
  .site-header .wrap{flex-direction:column;align-items:flex-start;padding-top:12px;padding-bottom:12px}
}