:root{
  --green:#0b6b53; --green-dark:#074a39; --accent:#f4b41a;
  --ink:#16211d; --muted:#5d6b65; --line:#e2e8e4; --bg:#fbfdfc; --card:#fff;
  --maxw:1080px; --radius:14px; --shadow:0 6px 24px rgba(11,107,83,.08);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}
a{color:var(--green-dark)}
h1,h2,h3{line-height:1.2;letter-spacing:-.01em}
h1{font-size:clamp(2rem,5vw,3.1rem);margin:.2em 0}
h2{font-size:clamp(1.4rem,3vw,2rem)}
img{max-width:100%}

/* header / footer */
header.site{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{font-weight:800;font-size:1.3rem;text-decoration:none;color:var(--green-dark)}
.logo span{color:var(--accent);font-weight:800}
header nav a{margin-left:22px;text-decoration:none;color:var(--ink);font-weight:600}
header nav a:hover{color:var(--green)}
footer.site{background:var(--green-dark);color:#dff0ea;margin-top:60px;padding:40px 0}
footer .ft-tag{font-size:1.2rem;font-weight:700;color:#fff;margin:0 0 14px}
.ft-links{display:flex;flex-wrap:wrap;gap:16px;margin-bottom:16px}
.ft-links a{color:#bfe0d4;text-decoration:none;font-size:.95rem}
.ft-small{font-size:.85rem;color:#9fc4b6;max-width:640px}

/* buttons */
.btn{display:inline-block;padding:14px 26px;border-radius:999px;font-weight:700;text-decoration:none;cursor:pointer;border:2px solid transparent;font-size:1rem;transition:transform .08s ease}
.btn:active{transform:translateY(1px)}
.btn.primary{background:var(--accent);color:#16211d}
.btn.primary:hover{background:#ffc638}
.btn.ghost{background:transparent;color:var(--green-dark);border-color:var(--green-dark)}
.btn.ghost:hover{background:var(--green-dark);color:#fff}
button.btn{font-family:inherit}

/* hero */
.hero{background:linear-gradient(160deg,#0b6b53,#074a39);color:#fff;padding:70px 0 80px}
.hero .kicker{color:var(--accent);font-weight:700;text-transform:uppercase;letter-spacing:.08em;font-size:.85rem;margin:0}
.hero h1{color:#fff;max-width:14ch}
.hero .sub{font-size:1.2rem;color:#d7ece4;max-width:60ch}
.hero-cta{margin-top:26px;display:flex;gap:14px;flex-wrap:wrap}
.hero-cta .btn.ghost{color:#fff;border-color:#fff}
.hero-cta .btn.ghost:hover{background:#fff;color:var(--green-dark)}

/* page head */
.page-head{padding:54px 0 10px}
.page-head .kicker{color:var(--green);font-weight:700;text-transform:uppercase;letter-spacing:.06em;font-size:.8rem;margin:0}
.page-head .sub{font-size:1.15rem;color:var(--muted);max-width:62ch}
.guide-head .answer{background:#eef6f2;border-left:4px solid var(--green);padding:16px 18px;border-radius:0 10px 10px 0;max-width:70ch;margin-top:18px}

/* guide grid */
.grid-section{padding:50px 0}
.g-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px;margin-top:24px}
.g-card{display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;text-decoration:none;color:var(--ink);box-shadow:var(--shadow);transition:transform .12s ease,box-shadow .12s ease}
.g-card:hover{transform:translateY(-3px);box-shadow:0 12px 30px rgba(11,107,83,.14)}
.g-cat{display:inline-block;font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--green);background:#eef6f2;padding:4px 10px;border-radius:999px}
.g-card h3{margin:12px 0 8px;font-size:1.25rem}
.g-card p{color:var(--muted);margin:0 0 14px}
.g-go{font-weight:700;color:var(--green-dark)}

/* how */
.how{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:54px 0}
.how-steps{counter-reset:s;list-style:none;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:22px;margin-top:24px}
.how-steps li{counter-increment:s;background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:24px 22px 22px;position:relative}
.how-steps li::before{content:counter(s);position:absolute;top:-16px;left:22px;width:34px;height:34px;background:var(--accent);color:#16211d;border-radius:50%;display:grid;place-items:center;font-weight:800}
.how-note{margin-top:26px;color:var(--muted);font-style:italic}

/* prose */
.prose{max-width:72ch;padding:30px 0 10px}
.prose h2{margin-top:1.7em}
.prose h3{margin-top:1.4em}
.prose p,.prose li{font-size:1.08rem}
.prose blockquote{border-left:4px solid var(--accent);margin:1.4em 0;padding:6px 18px;background:#fffaf0;color:#473a13;border-radius:0 8px 8px 0}
.prose code{background:#eef6f2;padding:2px 6px;border-radius:6px;font-size:.92em}
.prose hr{border:0;border-top:1px solid var(--line);margin:2em 0}
.prose-page{padding:10px 0 30px}

/* evidence */
.evidence{background:#f3f8f6;padding:46px 0;border-top:1px solid var(--line)}
.evidence .lede{color:var(--muted);max-width:68ch}
.evidence-list{list-style:none;padding:0;display:grid;gap:14px;margin-top:20px}
.evidence-list li{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px}
.evidence-list .claim{display:block;font-weight:600}
.evidence-list .src{display:block;margin-top:6px;font-size:.85rem;color:var(--muted)}

/* opt-in */
.optin{background:var(--green-dark);color:#fff;padding:50px 0}
.optin h2{color:#fff}
.optin p{color:#cfe7dd}
.optin-form{display:flex;gap:10px;max-width:520px;margin:18px 0 10px;flex-wrap:wrap}
.optin-form input{flex:1 1 240px;padding:14px 16px;border-radius:999px;border:0;font-size:1rem}
.optin-form button{padding:14px 24px;border-radius:999px;border:0;background:var(--accent);color:#16211d;font-weight:700;font-size:1rem;cursor:pointer}
.optin-small{font-size:.85rem;color:#9fc4b6}

/* value ladder */
.ladder{padding:54px 0}
.ladder-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px;margin-top:24px}
.tier{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;display:flex;flex-direction:column}
.tier.feat{border:2px solid var(--green);box-shadow:var(--shadow)}
.tier .price{font-size:2rem;font-weight:800;color:var(--green-dark)}
.tier .price.free{color:var(--accent)}
.tier h3{margin:.3em 0}
.tier p{color:var(--muted);flex:1}
.tier .btn{margin-top:14px;text-align:center}

/* faq */
.faq{background:#fff;border-top:1px solid var(--line);padding:48px 0}
.faq details{border:1px solid var(--line);border-radius:12px;padding:4px 18px;margin:12px 0;background:var(--bg)}
.faq summary{cursor:pointer;font-weight:700;padding:14px 0;font-size:1.08rem}
.faq details p{color:var(--muted);margin:0 0 14px}

/* cross-sell */
.cross{background:#fffaf0;padding:24px 0;text-align:center;font-size:1.1rem}
.cross a{color:var(--green-dark);font-weight:700}

/* sales */
.sales-head .price-tag{font-size:1.6rem;font-weight:800;color:var(--green-dark);margin-top:10px}
.sales-head .price-tag span{font-size:.9rem;font-weight:600;color:var(--muted)}
.sales{padding:30px 0 10px}
.sales-grid{display:grid;grid-template-columns:1fr 320px;gap:30px;align-items:start}
.sales-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;margin-bottom:20px}
.check{list-style:none;padding:0;margin:0}
.check li{padding:8px 0 8px 30px;position:relative}
.check li::before{content:"";position:absolute;left:0;top:14px;width:16px;height:8px;border-left:3px solid var(--green);border-bottom:3px solid var(--green);transform:rotate(-45deg)}
.buy-box{position:sticky;top:84px;background:#fff;border:2px solid var(--green);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.bb-price{font-size:2.4rem;font-weight:800;color:var(--green-dark);margin:0}
.bb-name{font-weight:600;margin:.2em 0 16px}
.buy-box .buy{width:100%;border:0;font-size:1.05rem}
.bb-small{font-size:.82rem;color:var(--muted);margin-top:14px}
.bump{display:flex;gap:10px;background:#fffaf0;border:1px dashed var(--accent);border-radius:10px;padding:14px;margin-bottom:16px;font-size:.92rem;cursor:pointer}
.bump input{margin-top:3px}

/* guarantee */
.guarantee{background:#eef6f2;padding:40px 0}
.guarantee p{max-width:68ch;font-size:1.1rem}

/* success / library */
.success-links{margin:20px 0}
.success-links a{display:inline-block;margin:8px 8px 0 0}
.library .prose{max-width:74ch}
.lib-badge{display:inline-block;background:#eef6f2;color:var(--green);font-weight:700;font-size:.8rem;padding:6px 12px;border-radius:999px;text-transform:uppercase;letter-spacing:.05em}
.lib-foot{font-size:.9rem;color:var(--muted)}

.form-msg{margin-top:10px;font-weight:600}
.form-msg.err{color:#ffd9d9}
@media(max-width:760px){
  .sales-grid{grid-template-columns:1fr}
  .buy-box{position:static}
}