:root{
  --bg:#fbfbf9; --ink:#0d1117; --muted:#5b6470; --line:#e9e7e1;
  --accent:#12b76a; --accent2:#0e9f5b; --cta:#0d1117; --card:#ffffff;
  --red:#d64545; --green:#0e9f5b; --maxw:820px; --r:16px; --shadow:0 10px 30px rgba(13,17,23,.07);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,Helvetica,Arial,sans-serif;line-height:1.55;-webkit-font-smoothing:antialiased}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}
h1,h2,h3{line-height:1.14;letter-spacing:-.02em;font-weight:800}
h1{font-size:clamp(32px,6.4vw,48px)}
h2{font-size:clamp(24px,5vw,34px);margin-bottom:14px}
.muted{color:var(--muted)}
.accent{color:var(--accent)}
.btn{display:inline-flex;align-items:center;gap:8px;background:var(--cta);color:#fff;font-weight:700;font-size:16px;padding:15px 24px;border-radius:999px;text-decoration:none;transition:transform .15s,box-shadow .15s;box-shadow:var(--shadow);border:none;cursor:pointer}
.btn:hover{transform:translateY(-2px);box-shadow:0 14px 34px rgba(13,17,23,.16)}
.btn.green{background:var(--accent)}.btn.green:hover{background:var(--accent2)}
.btn.lg{font-size:18px;padding:17px 32px}
.btn.ghost{background:transparent;color:var(--muted);box-shadow:none;border:1px solid var(--line);font-size:14px;padding:10px 16px}
.eyebrow{display:inline-block;font-size:13px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--accent2);background:rgba(18,183,106,.1);padding:7px 14px;border-radius:999px}
.hero{padding:70px 0 40px;text-align:center}
.hero .sub{font-size:clamp(17px,2.4vw,20px);color:var(--muted);max-width:600px;margin:18px auto 8px}
section{padding:30px 0}
/* skill accordion */
.skill{background:var(--card);border:1px solid var(--line);border-radius:var(--r);margin-bottom:14px;overflow:hidden;box-shadow:var(--shadow)}
.skill>summary{list-style:none;cursor:pointer;padding:20px 22px;display:flex;align-items:center;gap:14px}
.skill>summary::-webkit-details-marker{display:none}
.skill>summary .ic{font-size:24px;width:50px;height:50px;flex:none;display:flex;align-items:center;justify-content:center;background:rgba(18,183,106,.12);border-radius:12px}
.skill>summary .ti{flex:1}
.skill>summary .ti b{font-size:19px;display:block}
.skill>summary .ti span{font-size:14px;color:var(--muted)}
.skill>summary .arr{font-size:22px;color:var(--accent);transition:transform .2s}
.skill[open]>summary .arr{transform:rotate(45deg)}
.body{padding:0 22px 22px}
.body p.ov{color:var(--muted);font-size:16px;margin-bottom:16px}
.pc{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:16px}
@media(max-width:640px){.pc{grid-template-columns:1fr}}
.pc .col{border:1px solid var(--line);border-radius:12px;padding:14px}
.pc h4{font-size:14px;text-transform:uppercase;letter-spacing:.08em;margin-bottom:10px}
.pc .pro h4{color:var(--green)}.pc .con h4{color:var(--red)}
.pc ul{list-style:none;display:flex;flex-direction:column;gap:7px}
.pc li{font-size:14.5px;color:var(--muted);display:flex;gap:8px;align-items:flex-start}
.warn{background:#fdf3f2;border:1px solid #f3d6d4;color:#9c2f2a;border-radius:12px;padding:12px 14px;font-size:14px;margin-bottom:16px}
.who{font-size:14.5px;color:var(--muted);margin-bottom:16px}
.who b{color:var(--ink)}
.cta-row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.soon{font-size:13px;color:var(--muted)}
.tier{display:inline-block;font-size:11px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:#fff;background:var(--cta);padding:3px 9px;border-radius:999px;vertical-align:middle;margin-right:6px}
.tier.beginner{background:var(--accent)}
footer{padding:36px 0 90px;border-top:1px solid var(--line);text-align:center;color:var(--muted);font-size:13px;margin-top:20px}
footer p{margin:6px 0}
/* shared sales-page bits (ecom.html) */
.lead{font-size:19px;color:var(--muted);max-width:640px}
.grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:24px}
@media(max-width:640px){.grid{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:22px;box-shadow:var(--shadow)}
.card .ic{font-size:24px;margin-bottom:10px;display:inline-flex;width:48px;height:48px;align-items:center;justify-content:center;background:rgba(18,183,106,.12);border-radius:12px}
.card h3{font-size:18px;margin-bottom:6px}.card p{color:var(--muted);font-size:15px}
.inc{list-style:none;display:flex;flex-direction:column;gap:11px;margin-top:6px}
.inc li{display:flex;gap:10px;font-size:15.5px}
.cta-block{background:var(--cta);color:#fff;border-radius:24px;padding:44px 26px;text-align:center}
.cta-block h2{color:#fff}.cta-block p{color:#c7cdd6;max-width:480px;margin:8px auto 22px}
.back{display:inline-block;margin:20px 0;color:var(--accent2);text-decoration:none;font-weight:700;font-size:14px}
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s,transform .6s}.reveal.in{opacity:1;transform:none}