:root{--ink:#13231f;--muted:#5c6c66;--paper:#f6f3ec;--card:#fffdf8;--line:#d8ded8;--brand:#0f6b4f;--brand-dark:#0a4d39;--accent:#f2b44a;--danger:#a63b2d;--shadow:0 18px 50px rgba(19,35,31,.10)}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.65}
a{color:inherit}
.shell{width:min(1120px,calc(100% - 40px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:20;background:rgba(246,243,236,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.header-inner{min-height:70px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-weight:800;letter-spacing:-.02em}
.brand-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:var(--brand);color:#fff;font-size:12px}
.site-header nav{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:8px 18px;font-size:14px}
.site-header nav a,.site-footer nav a{text-decoration:none;color:var(--muted)}
.site-header nav a:hover,.site-footer nav a:hover{color:var(--brand)}
main{padding:72px 0 90px}
.page-hero{max-width:850px;margin-bottom:48px}
.eyebrow,.kicker{font-size:12px;font-weight:800;letter-spacing:.13em;color:var(--brand);margin:0 0 12px}
h1,h2,h3{line-height:1.12;letter-spacing:-.035em;margin:0 0 16px}
h1{font-size:clamp(42px,7vw,78px);max-width:900px}
h2{font-size:clamp(27px,4vw,42px);margin-top:56px}
h3{font-size:20px}
.lead{font-size:clamp(18px,2.3vw,24px);color:var(--muted);max-width:760px;margin:0}
.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin:42px 0 22px}
.tool-card{display:block;background:var(--card);border:1px solid var(--line);border-radius:22px;padding:26px;text-decoration:none;box-shadow:0 8px 24px rgba(19,35,31,.05);transition:transform .18s ease,box-shadow .18s ease}
.tool-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.tool-card h2{font-size:24px;margin:0 0 10px}
.tool-card p{color:var(--muted);margin:0 0 18px}
.tool-card span{font-weight:700;color:var(--brand)}
section>p,section>ul,section>ol{max-width:800px;color:#33443e;font-size:17px}
section>ul,section>ol{padding-left:24px}
.calculator{background:var(--ink);color:#fff;border-radius:28px;padding:clamp(24px,5vw,46px);margin:44px 0;box-shadow:var(--shadow)}
.calculator h2{font-size:clamp(28px,4vw,44px);margin-top:0}
.calculator-head p:last-child{color:#b8c9c3;max-width:650px}
.calculator-form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin:32px 0}
.calculator-form label{font-size:14px;font-weight:700;color:#d9e5e1}
.input-wrap{display:flex;align-items:center;margin-top:8px;background:#fff;color:var(--ink);border-radius:12px;padding:0 13px;border:2px solid transparent}
.input-wrap:focus-within{border-color:var(--accent)}
.input-wrap span{font-size:14px;color:var(--muted);white-space:nowrap}
.input-wrap input{width:100%;border:0;outline:0;background:transparent;padding:13px 6px;color:var(--ink);font:inherit;font-weight:700}
.result-panel{background:#fff;color:var(--ink);border-radius:18px;padding:24px;border-top:5px solid var(--accent)}
.result-label{margin:0;color:var(--muted);font-weight:700;font-size:14px}
.result-value{font-size:clamp(40px,7vw,68px);line-height:1;font-weight:850;letter-spacing:-.05em;margin:8px 0 16px;color:var(--brand-dark)}
.result-details{display:grid;gap:8px;font-size:14px;color:var(--muted)}
.result-details div{display:flex;justify-content:space-between;gap:20px;border-top:1px solid #e6eae7;padding-top:8px}
.result-details strong{color:var(--ink)}
.calculator-note{font-size:12px;color:#a9bbb5;max-width:700px}
.faq details{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px 20px;margin:10px 0}
.faq summary{cursor:pointer;font-weight:750}
.faq details p{color:var(--muted);margin-bottom:0}
.cta{background:linear-gradient(135deg,var(--brand),var(--brand-dark));color:#fff;border-radius:28px;padding:clamp(28px,5vw,54px);margin-top:70px}
.cta h2{font-size:clamp(30px,5vw,52px);margin-top:0}
.cta p{color:#d9eee7;font-size:18px;max-width:760px}
.button{display:inline-block;margin-top:14px;background:var(--accent);color:#242016;text-decoration:none;border:0;border-radius:999px;padding:14px 22px;font:inherit;font-weight:850;cursor:pointer}
.button:hover{filter:brightness(1.04)}
.button-disabled{opacity:.68;cursor:not-allowed}
.product-box{display:grid;grid-template-columns:1.05fr .95fr;gap:36px;background:var(--card);border:1px solid var(--line);border-radius:28px;padding:clamp(26px,5vw,48px);margin:44px 0;box-shadow:var(--shadow)}
.product-box h2{margin-top:0}
.product-box .price{font-size:52px;font-weight:850;letter-spacing:-.05em;color:var(--brand-dark);margin:0}
.product-box ul{padding-left:22px;color:#33443e}
.site-footer{border-top:1px solid var(--line);padding:38px 0;background:#efece4}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:30px;align-items:start}
.site-footer p{color:var(--muted);max-width:620px;margin:8px 0 0}
.site-footer nav{display:grid;gap:8px;justify-items:start}
@media(max-width:880px){.site-header nav a:nth-child(n+4){display:none}.card-grid,.product-box{grid-template-columns:1fr}.calculator-form{grid-template-columns:1fr}}
@media(max-width:620px){.shell{width:min(100% - 28px,1120px)}main{padding-top:46px}.site-header nav{display:none}h1{font-size:42px}h2{font-size:29px}.footer-grid{grid-template-columns:1fr}.calculator{border-radius:22px;padding:22px 18px}.result-panel{padding:20px 16px}.result-value{font-size:42px}}