:root{--ink:#0f172a;--muted:#475569;--line:#e2e8f0;--accent:#0f766e;--accent-dk:#115e59;--soft:#f0fdfa;--bg:#fff}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font:16px/1.65 -apple-system,BlinkMacSystemFont,'Segoe UI',Inter,Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased}
.wrap{max-width:760px;margin:0 auto;padding:0 24px}
.wrap-wide{max-width:960px;margin:0 auto;padding:0 24px}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
nav{border-bottom:1px solid var(--line);background:#fff;position:sticky;top:0;z-index:10}
nav .wrap-wide{display:flex;align-items:center;justify-content:space-between;height:62px}
.brand{font-weight:700;font-size:17px;color:var(--ink);letter-spacing:-.01em}
.brand span{color:var(--accent)}
nav a.nl{color:var(--muted);font-size:15px;margin-left:22px}
.hero{background:linear-gradient(160deg,#0f172a,#134e4a);color:#fff;padding:72px 0 64px}
.hero h1{font-size:clamp(30px,5vw,46px);line-height:1.12;letter-spacing:-.025em;font-weight:750;margin-bottom:18px}
.hero p.lede{font-size:clamp(17px,2.2vw,20px);color:#cbd5e1;max-width:620px;margin-bottom:30px}
.pill{display:inline-block;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);color:#99f6e4;font-size:13px;font-weight:600;padding:5px 13px;border-radius:99px;margin-bottom:22px;letter-spacing:.02em}
section{padding:60px 0}
section.tint{background:var(--soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
h2{font-size:clamp(23px,3.4vw,30px);letter-spacing:-.02em;line-height:1.25;margin-bottom:16px;font-weight:700}
h3{font-size:19px;margin:32px 0 10px;letter-spacing:-.01em;font-weight:650}
p{margin-bottom:16px;color:var(--muted)}
p.tight{margin-bottom:10px}
ul,ol{margin:0 0 18px 22px;color:var(--muted)}
li{margin-bottom:9px}
strong{color:var(--ink);font-weight:650}
.form{display:flex;gap:9px;flex-wrap:wrap;margin:22px 0 10px}
.form input{flex:1;min-width:220px;padding:14px 15px;border:1px solid var(--line);border-radius:9px;font-size:16px;font-family:inherit;background:#fff;color:var(--ink)}
.form input:focus{outline:2px solid var(--accent);outline-offset:-1px;border-color:transparent}
.btn{background:var(--accent);color:#fff;border:0;padding:14px 25px;border-radius:9px;font-size:16px;font-weight:650;cursor:pointer;font-family:inherit;white-space:nowrap}
.btn:hover{background:var(--accent-dk)}
.hero .form input{border:0}
.note{font-size:13.5px;color:#64748b}
.hero .note{color:#94a3b8}
.msg{font-size:15px;font-weight:600;margin-top:12px;display:none}
.card{background:#fff;border:1px solid var(--line);border-radius:13px;padding:24px;margin-bottom:16px}
.sample{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13.5px;line-height:1.6}
.sample .ttl{font-weight:700;color:var(--ink);font-family:inherit;font-size:16px;margin-bottom:7px;line-height:1.35}
.meta{display:flex;flex-wrap:wrap;gap:7px;margin:11px 0}
.tag{background:var(--soft);border:1px solid #99f6e4;color:var(--accent-dk);font-size:12px;font-weight:600;padding:3px 9px;border-radius:5px;font-family:inherit}
.tag.grey{background:#f1f5f9;border-color:var(--line);color:var(--muted)}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(215px,1fr));gap:18px;margin-top:26px}
.price{font-size:42px;font-weight:750;letter-spacing:-.03em;color:var(--ink)}
.price small{font-size:17px;color:var(--muted);font-weight:500}
footer{border-top:1px solid var(--line);padding:34px 0;font-size:14px;color:#64748b}
footer a{color:#64748b;text-decoration:underline}
.toc{background:var(--soft);border:1px solid #99f6e4;border-radius:13px;padding:22px 24px;margin:26px 0}
.toc ol{margin-bottom:0}
.toc li{margin-bottom:6px}
.cta-box{background:#0f172a;color:#fff;border-radius:13px;padding:30px;margin:38px 0}
.cta-box h3{color:#fff;margin-top:0}
.cta-box p{color:#cbd5e1}
hr{border:0;border-top:1px solid var(--line);margin:40px 0}
@media(max-width:600px){.hero{padding:52px 0 46px}section{padding:44px 0}nav a.nl{margin-left:14px;font-size:14px}}