:root{
  --ink:#111510;
  --paper:#f1f0ea;
  --muted:#a8ada3;
  --green:#9cb49a;
  --line:rgba(241,240,235,.15);
  --font-body:"Segoe UI",Arial,sans-serif;
  --font-display:"Segoe UI",Arial,sans-serif;
}
body{font-family:var(--font-body);letter-spacing:.005em}
.site-header{padding-inline:clamp(24px,6vw,96px)}
.wordmark{font-size:11px;letter-spacing:.16em}
.site-header nav{gap:clamp(20px,3vw,48px);font-size:11px;letter-spacing:.04em}
.header-cta{font-size:11px;letter-spacing:.08em;text-transform:uppercase}
.hero{height:min(900px,100svh);min-height:760px;max-height:980px;align-items:center;padding:110px clamp(28px,9vw,144px)}

.hero__art{position:absolute;z-index:2;top:0;right:0;width:58%;height:100%;overflow:hidden;background:#10130f}
.hero__art img{display:block;width:100%;height:100%;object-fit:contain;object-position:center}
.hero__content{z-index:3;width:min(700px,52%);margin:0;padding:0 0 18px}
.hero .eyebrow{margin:0 0 25px;font-size:10px;letter-spacing:.24em}
.hero h1{font-size:clamp(76px,9vw,136px);line-height:.88;letter-spacing:-.075em;font-weight:600;margin:0 0 17px}
.hero__subhead{margin:0 0 7px;font-size:clamp(20px,2vw,26px);font-weight:500;letter-spacing:-.025em;color:#f1f0ea}
.hero__copy{max-width:480px;margin:0;color:#c4c9c0;font-size:16px;line-height:1.55}
.hero__fit{margin-top:20px;padding-left:13px;border-left:1px solid var(--green);font-size:11px;letter-spacing:.025em;color:#c9cec5}
.hero__offer{gap:16px;margin:25px 0 16px;align-items:center}
.price{font-size:29px;letter-spacing:-.04em}
.compare-price{font-size:14px;color:#aab0a6}
.button{min-height:50px;padding-inline:22px;font-size:11px;letter-spacing:.075em;text-transform:uppercase}
.button--primary{background:#a7bea5;color:#101610}
.button--primary:hover{background:#c3d4be}
.hero__form{display:inline-block;vertical-align:top;margin:0 10px 0 0}
.button--whatsapp{margin:0;border-color:rgba(241,240,234,.36);color:#f1f0ea}
.button--whatsapp:hover{border-color:#a7bea5;color:#a7bea5}
.hero__index{font-size:10px;letter-spacing:.12em;color:#d1d6cd}
.section-shell h2{font-weight:500;letter-spacing:-.06em}
.section-shell h2 em{font-family:Georgia,"Times New Roman",serif;font-weight:400;letter-spacing:-.045em}
.eyebrow{font-size:10px;letter-spacing:.2em}
.benefits{gap:72px 10%;background:#151a16}
.benefit-item{padding:29px 0}
.benefit-item h3{font-size:18px;letter-spacing:-.02em}
.benefit-item p{line-height:1.65}
.details{background:#eeede7}
.faq-item summary{font-size:16px;letter-spacing:-.015em}
.closing__panel{background:linear-gradient(110deg,rgba(9,12,10,.95),rgba(9,12,10,.56)),url("desulfon-applications.jpeg") center/cover;background-color:#202720}
@media(max-width:800px){
  .hero{height:auto;min-height:0;max-height:none;padding:0 20px 42px;align-items:stretch;flex-direction:column}
  
  .hero__art{position:relative;top:auto;right:auto;width:calc(100% + 40px);height:min(53svh,490px);min-height:350px;margin:0 -20px;flex:none}
  .hero__art img{object-fit:cover;object-position:center 48%}
  .hero__content{width:100%;margin:0;padding:21px 0 0}
  .hero .eyebrow{margin-bottom:17px}
  .hero h1{font-size:clamp(67px,16vw,102px);margin-bottom:11px}
  .hero__subhead{font-size:21px}
  .hero__copy{font-size:15px;max-width:400px}
  .hero__fit{max-width:360px;margin-top:15px;font-size:10px}
  .hero__offer{margin:20px 0 14px}
  .hero__form{display:block;margin:0 0 9px}
  .button--whatsapp{margin-top:0}
  .site-header{padding-inline:20px}
}
@media(max-width:390px){
  .hero{min-height:760px;padding-inline:20px}
  .hero h1{font-size:65px}
  .hero__subhead{font-size:19px}
  .hero__offer{margin-top:16px}
}


/* DESULFON split hero: editable copy left, product visual right */
.site-header{position:absolute;inset:0 0 auto;height:92px;padding-inline:clamp(24px,5vw,84px);background:rgba(8,12,10,.38);backdrop-filter:blur(8px)}
.wordmark{display:flex;flex-direction:column;gap:0;line-height:1.15;letter-spacing:.08em}
.wordmark__name{font-size:clamp(19px,2vw,27px);font-weight:800;letter-spacing:.025em;color:#fff}
.wordmark__tagline{font-size:9px;font-weight:500;letter-spacing:.22em;color:#c6d1c4}
.header-cta{display:inline-flex;align-items:center;gap:12px;padding:13px 22px;border-radius:999px;background:#78bf4e;color:#10170d;font-size:12px;font-weight:800;letter-spacing:.02em;text-transform:none}
.header-cta span{font-size:18px;line-height:1}
.hero{height:auto;min-height:min(820px,100svh);max-height:none;padding:142px clamp(24px,5vw,84px) 82px;display:grid;grid-template-columns:minmax(0,.94fr) minmax(0,1.06fr);align-items:center;gap:clamp(28px,4vw,72px);background:radial-gradient(ellipse at 70% 45%,#17291c 0%,#0d120f 54%,#090c0a 100%)}
.hero__content{width:auto;max-width:610px;margin:0;padding:0;z-index:3;grid-column:1;grid-row:1}
.hero .eyebrow{margin:0 0 24px;font-size:11px;letter-spacing:.19em;color:#79c65a}
.hero h1{font-size:clamp(56px,6.1vw,94px);line-height:.94;letter-spacing:-.065em;font-weight:800;margin:0 0 14px;color:#f8faf6}
.hero__subhead{font-size:clamp(21px,2.45vw,34px);line-height:1.2;font-weight:650;letter-spacing:-.035em;margin:0 0 18px;color:#f4f6f0}
.hero__copy{max-width:480px;font-size:clamp(15px,1.15vw,17px);line-height:1.65;color:#c9d0c7;margin:0}
.hero__proof{display:flex;flex-wrap:wrap;gap:14px 22px;margin-top:27px;max-width:600px}
.hero__proof-item{display:flex;align-items:center;gap:9px;max-width:180px;font-size:12px;line-height:1.4;color:#e0e7dc}
.proof-icon{width:29px;height:29px;display:inline-flex;align-items:center;justify-content:center;flex:0 0 29px;border:1px solid #78bf4e;border-radius:50%;color:#8bd85c;font-size:17px;font-weight:700}
.hero__fit{margin:23px 0 0;padding:0;border:0;font-size:11px;line-height:1.5;color:#aeb9ad}
.hero__offer{display:flex;align-items:baseline;gap:16px;margin:25px 0 17px}
.price{font-size:clamp(30px,3vw,42px);line-height:1;font-weight:800;letter-spacing:-.04em;color:#fff}
.compare-price{font-size:clamp(16px,1.5vw,21px);color:#929c91}
.hero__form{display:inline-block;vertical-align:middle;margin:0 12px 0 0}
.hero .button{min-height:56px;padding-inline:23px;border-radius:13px;font-size:13px;letter-spacing:0;text-transform:none;font-weight:750}
.hero .button--primary{background:linear-gradient(110deg,#1eae3e,#45c54d);color:#fff;box-shadow:0 8px 24px rgba(28,174,61,.16)}
.hero .button--primary:hover{background:#61d263;color:#081109}
.hero .button--whatsapp{display:inline-flex;margin:0;border:1px solid #73bd53;color:#fff;background:rgba(8,14,10,.62)}
.hero .button--whatsapp:hover{background:rgba(80,150,60,.15);border-color:#9eea7d;color:#fff}
.whatsapp-mark{font-size:19px;color:#8ee66b}
.hero__trust{display:flex;flex-wrap:wrap;gap:18px;margin-top:23px;color:#aeb8ae;font-size:11px}
.hero__art{position:relative;z-index:1;grid-column:2;grid-row:1;width:100%;height:clamp(440px,54vw,650px);overflow:hidden;border-radius:22px;background:#10170f;isolation:isolate;box-shadow:0 28px 80px rgba(0,0,0,.3)}
.hero__art::before{content:"";position:absolute;z-index:1;inset:0;pointer-events:none;background:linear-gradient(90deg,rgba(9,13,10,.24),transparent 28%),linear-gradient(0deg,rgba(8,12,9,.28),transparent 30%)}
.hero__art img{display:block;width:100%;height:100%;object-fit:cover;object-position:center center;opacity:1}
.hero__image-caption{position:absolute;z-index:2;left:20px;bottom:18px;padding:8px 12px;border:1px solid rgba(255,255,255,.22);border-radius:999px;background:rgba(8,12,9,.62);backdrop-filter:blur(8px);font-size:9px;letter-spacing:.15em;color:#edf4e9}
.hero .scroll-cue{left:clamp(24px,5vw,84px);bottom:25px}
.hero .hero__index{right:clamp(24px,5vw,84px);bottom:21px}
@media(max-width:1000px) and (min-width:801px){.hero{grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:25px;padding-inline:32px}.hero h1{font-size:clamp(54px,6vw,74px)}.hero__art{height:490px}.hero .button{padding-inline:17px}.hero__proof{gap:12px}.hero__proof-item{font-size:11px}}
@media(max-width:800px){
 .site-header{height:76px;padding-inline:20px}.site-header nav{top:82px;left:20px;right:20px}
 .hero{display:flex;flex-direction:column-reverse;align-items:stretch;gap:0;min-height:0;height:auto;padding:126px 20px 64px;overflow:hidden}
 .hero__content{width:100%;max-width:none;padding:26px 0 0;margin:0;order:2}
 .hero__art{order:1;position:relative;inset:auto;width:100%;height:auto;min-height:0;max-height:none;aspect-ratio:1.2/1;border-radius:18px;box-shadow:0 18px 45px rgba(0,0,0,.24)}
 .hero__art img{object-fit:cover;object-position:center}
 .hero h1{font-size:clamp(56px,13vw,82px);margin-bottom:12px}
 .hero .eyebrow{margin-bottom:15px}
 .hero__subhead{font-size:23px;margin-bottom:12px}
 .hero__copy{font-size:15px}
 .hero__proof{gap:13px;margin-top:20px}
 .hero__proof-item{font-size:11px;max-width:calc(50% - 8px)}
 .hero__fit{margin-top:16px}
 .hero__offer{margin:20px 0 15px}
 .hero__form{display:block;margin:0 0 10px}
 .hero .button{width:100%;justify-content:center;min-height:54px}
 .hero .button--whatsapp{margin-top:0}
 .hero__trust{margin-top:17px}
 .hero .scroll-cue{display:none}.hero .hero__index{display:none}
}
@media(max-width:390px){.hero{padding-inline:16px}.site-header{padding-inline:16px}.site-header nav{left:16px;right:16px}.wordmark__name{font-size:18px}.header-cta{padding:11px 14px}.hero__proof-item{max-width:100%}}