:root{--green:#1f6f5c;--green-d:#175648;--ink:#1a2321;--muted:#5d6b67;--line:#e3e8e6;--bg:#f7f9f8}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--ink);line-height:1.65;background:#fff}
img{max-width:100%;display:block}
a{color:var(--green);text-decoration:none}
.wrap{max-width:1160px;margin:0 auto;padding:0 24px}
/* header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:70px;gap:20px;position:relative}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.5px;color:var(--ink)}
.brand img{height:34px;width:auto}
.nav nav{display:flex;align-items:center;gap:26px;flex-wrap:wrap}
.nav nav a{color:var(--ink);font-size:15px;font-weight:500}
.nav nav a:hover,.nav nav a.active{color:var(--green)}
.nav-cta{background:var(--green);color:#fff!important;padding:10px 20px;border-radius:999px;font-weight:700}
.nav-cta:hover{background:var(--green-d)}
.nav-burger{display:none;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;margin-left:auto;cursor:pointer}
.nav-burger span{display:block;width:24px;height:2px;background:var(--ink);border-radius:2px;transition:.25s}
.nav-toggle{display:none}
.nav-toggle:checked ~ .nav-burger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle:checked ~ .nav-burger span:nth-child(2){opacity:0}
.nav-toggle:checked ~ .nav-burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
/* hero */
.hero{background:linear-gradient(160deg,#123f36 0%,#1f6f5c 60%,#2b8a71 100%);color:#fff;padding:88px 0 96px}
.hero .wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.hero h1{font-size:46px;line-height:1.15;margin:0 0 18px;letter-spacing:-.5px}
.hero p{font-size:18px;opacity:.92;margin:0 0 28px;max-width:560px}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:1.4px;text-transform:uppercase;color:#9fd8c6;margin-bottom:14px}
.btn{display:inline-block;padding:13px 26px;border-radius:999px;font-weight:700;font-size:15px}
.btn-primary{background:#fff;color:var(--green)}
.btn-ghost{border:1.5px solid rgba(255,255,255,.6);color:#fff;margin-left:10px}
.hero img{border-radius:14px;box-shadow:0 24px 60px rgba(0,0,0,.35)}
/* sections */
section{padding:76px 0}
.sec-head{max-width:760px;margin-bottom:44px}
.sec-head h2{font-size:34px;margin:0 0 12px;letter-spacing:-.4px}
.sec-head p{color:var(--muted);font-size:17px;margin:0}
.grid{display:grid;gap:26px}
.g4{grid-template-columns:repeat(4,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.card{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff;transition:.2s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-3px);box-shadow:0 14px 34px rgba(20,50,40,.10)}
.card .thumb{aspect-ratio:4/3;background:#eef3f1;overflow:hidden}
.card .thumb img{width:100%;height:100%;object-fit:cover}
.card .body{padding:20px 20px 24px;flex:1;display:flex;flex-direction:column}
.card h3{font-size:18px;margin:0 0 8px}
.card p{color:var(--muted);font-size:14.5px;margin:0 0 16px;flex:1}
.tag{display:inline-block;font-size:12px;font-weight:700;color:var(--green);background:#e8f4f0;padding:4px 10px;border-radius:999px;margin-bottom:12px;letter-spacing:.3px}
.cat-card{background:var(--bg);border-radius:14px;padding:26px;border:1px solid var(--line)}
.cat-card h3{margin:0 0 8px;font-size:19px}
.cat-card p{color:var(--muted);font-size:14.5px;margin:0 0 14px}
/* features */
.feat{display:flex;gap:14px;align-items:flex-start}
.feat .dot{flex:0 0 34px;height:34px;border-radius:50%;background:#e8f4f0;color:var(--green);display:flex;align-items:center;justify-content:center;font-weight:800}
.feat p{margin:0;font-size:15px;color:var(--muted)}
.band{background:var(--bg)}
/* product detail */
.pd{display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:start;padding-top:48px}
.pd img{border-radius:14px;border:1px solid var(--line)}
.pd h1{font-size:34px;margin:14px 0 14px;letter-spacing:-.4px}
.pd .lead{font-size:17px;color:var(--muted)}
table.spec{width:100%;border-collapse:collapse;margin-top:8px;font-size:14.5px}
table.spec th,table.spec td{text-align:left;padding:11px 14px;border-bottom:1px solid var(--line);vertical-align:top}
table.spec tr:nth-child(odd) td{background:#fbfcfc}
table.spec td:first-child{font-weight:600;width:38%;color:#2a3a35}
/* guide table */
table.guide{width:100%;border-collapse:separate;border-spacing:0;font-size:14.5px;border:1px solid var(--line);border-radius:12px;overflow:hidden}
table.guide th{background:var(--green);color:#fff;text-align:left;padding:14px 16px;font-size:13px;letter-spacing:.6px;text-transform:uppercase}
table.guide td{padding:14px 16px;border-top:1px solid var(--line);vertical-align:top}
table.guide td:first-child{font-weight:600}
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin-top:8px}
.factors{margin-top:16px;font-size:14px;color:var(--muted)}
/* prose */
.prose{max-width:820px}
.prose p{font-size:16.5px;margin:0 0 18px}
.prose h2{font-size:26px;margin:32px 0 12px}
/* cta */
.cta{background:var(--green);color:#fff;text-align:center;padding:64px 0}
.cta h2{font-size:32px;margin:0 0 12px}
.cta p{opacity:.9;margin:0 0 26px}
/* faq (SEO snippet + GEO) */
.faq{display:grid;gap:14px;max-width:860px}
.faq details{border:1px solid var(--line);border-radius:12px;padding:16px 20px;background:#fff}
.faq summary{font-weight:700;font-size:16px;cursor:pointer;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:"+";color:var(--green);font-weight:800;margin-right:10px}
.faq details[open] summary::before{content:"\2212"}
.faq details p{margin:12px 0 0;color:var(--muted);font-size:15px}
/* forms */
form.inq{display:grid;gap:14px;max-width:560px}
form.inq label{font-size:14px;font-weight:600}
form.inq input,form.inq textarea{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:10px;font:inherit;margin-top:6px}
form.inq button{background:var(--green);color:#fff;border:0;padding:14px;border-radius:999px;font-weight:700;cursor:pointer;font-size:15px}
.form-status{margin:6px 0 0;font-size:14px;min-height:18px;line-height:1.5}
.form-ok{color:#1a7f4b;font-weight:600}
.form-err{color:#c0392b;font-weight:600}
.consent{display:flex;gap:10px;align-items:flex-start;font-size:13.5px!important;font-weight:400!important;color:var(--muted);line-height:1.5}
.consent input{width:auto!important;margin-top:3px;flex:0 0 auto}
.consent a{color:var(--green)}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px}
@media(max-width:960px){
 .hero .wrap,.pd,.contact-grid,.foot{grid-template-columns:1fr}
 .g4{grid-template-columns:repeat(2,1fr)}.g3{grid-template-columns:repeat(2,1fr)}
 .hero h1{font-size:34px}
}
@media(max-width:860px){
 .nav-burger{display:flex}
 .nav nav{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);
   flex-direction:column;align-items:stretch;gap:0;padding:6px 0;box-shadow:0 16px 30px rgba(20,50,40,.12)}
 .nav nav a{padding:14px 24px;font-size:16px;border-top:1px solid var(--line)}
 .nav nav a:first-child{border-top:0}
 .nav-cta{margin:8px 16px;border-radius:10px;text-align:center}
 .nav-toggle:checked ~ nav{display:flex}
}
@media(max-width:768px){
 .wrap{padding:0 18px}
 section{padding:56px 0}
 .sec-head h2{font-size:28px}
 .hero h1{font-size:30px}
 .pd,.contact-grid{gap:32px}
 table.spec,table.guide{width:auto;min-width:560px}
 .foot a{display:block;margin:5px 0;white-space:nowrap}
 .foot h4{margin:16px 0 8px}
}
@media(max-width:600px){
 .g4,.g3,.g2{grid-template-columns:1fr}
 .hero{padding:58px 0 60px}
 .hero h1{font-size:27px}
 section{padding:48px 0}
 .wa-float{right:14px;bottom:14px;padding:8px 16px 8px 8px}
 .wa-icon{width:32px;height:32px;flex-basis:32px}
 .wa-text{font-size:15px}
}