:root{
  --bg:#f7faf8;
  --surface:#ffffff;
  --ink:#15352b;
  --muted:#5b6f66;
  --line:#dbe8e1;
  --brand:#70cf44;
  --brand-dark:#0b6b45;
  --brand-deep:#06261d;
  --soft:#eef6f1;
  --shadow:0 18px 40px rgba(11,44,34,.10);
  --radius:24px;
  --max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,Segoe UI,Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.6}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(calc(100% - 2rem),var(--max));margin:0 auto}
.section{padding:84px 0}
.section.soft{background:var(--soft)}
.kicker{display:inline-block;padding:.42rem .8rem;border-radius:999px;background:rgba(112,207,68,.16);color:var(--brand-dark);font-weight:700;font-size:.84rem;letter-spacing:.02em}
.display{font-size:clamp(2rem,4.8vw,3.35rem);line-height:1.06;margin:18px 0 18px;font-weight:800;letter-spacing:-.03em}
.lead{font-size:1.08rem;color:var(--muted);max-width:70ch}
.site-header{position:sticky;top:0;z-index:40;background:rgba(247,250,248,.88);backdrop-filter:blur(14px);border-bottom:1px solid rgba(21,53,43,.07)}
.topbar{background:var(--brand-deep);color:#eaf5ef;font-size:.92rem}
.topbar .container{display:flex;justify-content:space-between;gap:1rem;align-items:center;padding:.6rem 0;flex-wrap:wrap}
.topbar a{opacity:.94}
.topbar strong{color:#fff}
.nav{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:1rem 0}
.brand img{height:60px;width:auto}
.nav-links{display:flex;align-items:center;gap:1.1rem}
.nav-links a{font-weight:600;color:#214137}
.nav-links a:hover{color:var(--brand-dark)}
.nav-cta,.btn{display:inline-flex;align-items:center;justify-content:center;gap:.55rem;border-radius:999px;font-weight:700;transition:.25s ease;cursor:pointer}
.nav-cta{background:var(--brand-dark);color:#fff;padding:.85rem 1.15rem;box-shadow:var(--shadow)}
.nav-cta:hover{transform:translateY(-1px);background:#0a5d3d}
.nav-toggle{display:none;background:none;border:none;padding:.35rem;color:var(--ink)}
.nav-toggle svg{width:28px;height:28px}
.btn{padding:1rem 1.35rem;border:none}
.btn svg{width:18px;height:18px}
.btn-primary{background:linear-gradient(135deg,var(--brand),#97e35b);color:#09311f;box-shadow:var(--shadow)}
.btn-primary:hover{transform:translateY(-2px)}
.btn-dark{background:var(--brand-dark);color:#fff}
.btn-dark:hover{background:#085b3a}
.btn-line{border:1px solid rgba(255,255,255,.35);color:#fff;background:transparent}
.btn-line.dark{border-color:rgba(21,53,43,.18);color:var(--ink)}
.btn-ghost{border:1px solid var(--line);background:#fff;color:var(--ink)}
.btn-block{width:100%}
.hero{position:relative;overflow:hidden;background:radial-gradient(circle at top left, rgba(112,207,68,.20), transparent 34%),linear-gradient(180deg,#08251d 0%,#0c3328 100%);color:#fff}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(6,19,16,.82),rgba(6,19,16,.48) 48%,rgba(6,19,16,.12) 100%)}
.hero-media{position:absolute;inset:0;z-index:0}
.hero-media img{width:100%;height:100%;object-fit:cover;object-position:center}
.hero .container{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) 400px;gap:2rem;align-items:end;padding:84px 0 72px}
.hero-copy{max-width:720px}
.hero-copy h1{font-size:clamp(2.6rem,5vw,4.8rem);line-height:.98;margin:18px 0;font-weight:900;letter-spacing:-.04em}
.hero-copy p{font-size:1.14rem;color:rgba(255,255,255,.88);max-width:64ch}
.hero-actions{display:flex;gap:1rem;flex-wrap:wrap;margin:30px 0}
.hero-panel{background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.14);backdrop-filter:blur(10px);padding:1.35rem;border-radius:22px;box-shadow:var(--shadow)}
.hero-panel h3{margin:.1rem 0 .35rem;font-size:1.18rem}
.hero-panel p{font-size:.98rem;color:rgba(255,255,255,.88);margin:0 0 1rem}
.hero-mini{display:grid;gap:.85rem}
.hero-mini div{display:grid;grid-template-columns:18px 1fr;gap:.7rem;align-items:start;font-size:.95rem;color:rgba(255,255,255,.92)}
.hero-mini svg{width:18px;height:18px;color:var(--brand)}
.hero-strip{position:relative;z-index:1;border-top:1px solid rgba(255,255,255,.10);background:rgba(255,255,255,.05)}
.hero-strip-inner{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;padding:1.25rem 0}
.hero-stat{display:flex;flex-direction:column;gap:.22rem}
.hero-stat strong{font-size:1.7rem;color:#fff}
.hero-stat span{font-size:.95rem;color:rgba(255,255,255,.80)}
.section-head{max-width:760px;margin:0 auto 2rem;text-align:center}
.grid-3,.grid-4,.materials-grid,.contact-grid,.faq-grid,.stats-grid,.cards-grid,.structure-grid,.areas-grid{display:grid;gap:1.25rem}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.stats-grid{grid-template-columns:repeat(4,1fr)}
.cards-grid{grid-template-columns:repeat(3,1fr)}
.card,.stat-card,.faq,.material-item,.contact-card,.structure-card,.area-card,.cta-band,.form-panel,.spotlight{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.card,.material-item,.faq,.contact-card,.structure-card,.area-card{padding:1.4rem}
.card h3,.material-item h3,.contact-card h3,.structure-card h3,.area-card h3{margin:.2rem 0 .55rem;font-size:1.18rem}
.card p,.material-item p,.contact-card p,.structure-card p,.area-card p{margin:0;color:var(--muted)}
.icon{width:52px;height:52px;border-radius:16px;background:linear-gradient(135deg, rgba(112,207,68,.20), rgba(11,107,69,.10));display:grid;place-items:center;color:var(--brand-dark);margin-bottom:.9rem}
.icon svg{width:26px;height:26px}
.stat-card{padding:1.5rem;text-align:center}
.stat-card strong{display:block;font-size:2rem;color:var(--brand-dark);margin-bottom:.28rem}
.stat-card span{color:var(--muted)}
.stat-card small{display:block;margin-top:.45rem;color:#799083}
.spotlight{display:grid;grid-template-columns:1.05fr .95fr;overflow:hidden}
.spotlight img{width:100%;height:100%;object-fit:cover;min-height:360px}
.spotlight-copy{padding:2rem}
.check-list{display:grid;gap:.95rem;margin-top:1.2rem}
.check{display:grid;grid-template-columns:20px 1fr;gap:.8rem;align-items:start}
.check svg{width:20px;height:20px;color:var(--brand-dark)}
.check b{display:block;margin-bottom:.14rem}
.check span{color:var(--muted)}
.materials-grid{grid-template-columns:repeat(3,1fr)}
.material-item img,.structure-card img{border-radius:18px;margin-bottom:1rem;aspect-ratio:4/3;object-fit:cover;width:100%}
.material-tag{display:inline-block;margin-top:.85rem;font-size:.83rem;color:var(--brand-dark);font-weight:700;background:rgba(112,207,68,.16);padding:.35rem .65rem;border-radius:999px}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;margin-top:2rem}
.step{background:#08241c;color:#f0fbf5;padding:1.35rem;border-radius:22px;position:relative;overflow:hidden}
.step::after{content:"";position:absolute;top:0;right:0;width:72px;height:72px;border-radius:0 0 0 100%;background:rgba(112,207,68,.16)}
.step span{display:block;color:#8ad75b;font-size:.82rem;font-weight:800;letter-spacing:.06em;margin-bottom:.55rem}
.step h3{margin:.1rem 0 .45rem;font-size:1.1rem}
.step p{margin:0;color:rgba(240,251,245,.82)}
.cta-band{padding:2rem;display:grid;grid-template-columns:1fr auto;gap:1.5rem;align-items:center;background:linear-gradient(135deg,#0c6b45,#083f2b);color:#fff}
.cta-band p{margin:.35rem 0 0;color:rgba(255,255,255,.85)}
.areas-grid{grid-template-columns:repeat(4,1fr)}
.area-card strong{display:block;color:var(--brand-dark);font-size:1.05rem;margin-bottom:.4rem}
.faq-grid{grid-template-columns:repeat(2,1fr)}
.faq h3{margin:.15rem 0 .45rem;font-size:1.07rem}
.contact-grid{grid-template-columns:380px 1fr}
.contact-stack{display:grid;gap:1rem}
.contact-list{list-style:none;padding:0;margin:0;display:grid;gap:.8rem}
.contact-list li{display:grid;grid-template-columns:24px 1fr;gap:.75rem;align-items:start;color:var(--muted)}
.contact-list svg{width:22px;height:22px;color:var(--brand-dark)}
.socials{display:flex;gap:.75rem;flex-wrap:wrap;margin-top:1rem}
.socials a{display:inline-flex;align-items:center;gap:.5rem;padding:.85rem 1rem;border:1px solid var(--line);background:#fff;border-radius:14px;font-weight:600}
.socials svg{width:18px;height:18px}
.form-panel{padding:1.6rem}
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem}
.field{display:grid;gap:.4rem}
.field.wide{grid-column:1/-1}
label{font-size:.95rem;font-weight:700}
input,select,textarea{width:100%;padding:1rem;border:1px solid #cfe0d7;border-radius:16px;background:#fff;color:var(--ink);font:inherit}
textarea{min-height:150px;resize:vertical}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--brand-dark);box-shadow:0 0 0 4px rgba(11,107,69,.09)}
.form-note,.form-success{font-size:.92rem;color:var(--muted)}
.form-success{min-height:1.25rem}
.quote-box{padding:1rem 1.1rem;background:#f4faf7;border:1px dashed #bfd8cb;border-radius:16px;color:#365248;font-size:.95rem}
.page-hero{padding:72px 0 56px;background:linear-gradient(180deg,#f0f8f3,#f7faf8)}
.page-hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:2rem;align-items:center}
.page-hero img{border-radius:26px;box-shadow:var(--shadow);min-height:320px;object-fit:cover;width:100%}
.page-hero h1{font-size:clamp(2.2rem,4.4vw,4rem);line-height:1.03;margin:14px 0 14px;letter-spacing:-.035em}
.page-hero p{color:var(--muted);font-size:1.08rem}
.structure-grid{grid-template-columns:repeat(3,1fr)}
.structure-card small{display:block;margin-top:.7rem;color:#779085}
.footer{background:#071e17;color:#dfeee7;padding:2rem 0 2.4rem;margin-top:72px}
.footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:1.5rem}
.footer h4{margin:.1rem 0 .7rem;color:#fff}
.footer p,.footer a,.footer li{color:rgba(223,238,231,.84)}
.footer ul{list-style:none;padding:0;margin:0;display:grid;gap:.55rem}
.footer-brand img{height:58px;width:auto;margin-bottom:1rem}
.footer-bottom{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.12);padding-top:1rem;margin-top:1.4rem;font-size:.92rem;color:rgba(223,238,231,.72)}
.whatsapp-float{position:fixed;right:18px;bottom:18px;z-index:45;background:#25D366;color:#fff;width:62px;height:62px;border-radius:50%;display:grid;place-items:center;box-shadow:0 18px 36px rgba(0,0,0,.22)}
.whatsapp-float svg{width:30px;height:30px}
.reveal{opacity:0;transform:translateY(20px);transition:.7s ease}
.reveal.show{opacity:1;transform:none}
@media (max-width: 1080px){
  .hero-grid,.page-hero-grid,.spotlight,.contact-grid,.footer-grid{grid-template-columns:1fr}
  .hero-grid{padding:68px 0 58px}
  .hero-panel{max-width:620px}
  .grid-3,.cards-grid,.materials-grid,.structure-grid{grid-template-columns:repeat(2,1fr)}
  .grid-4,.stats-grid,.areas-grid,.steps{grid-template-columns:repeat(2,1fr)}
}
@media (max-width: 760px){
  .topbar .container{justify-content:center;text-align:center}
  .brand img{height:54px}
  .nav-toggle{display:block}
  .nav-links{position:absolute;left:1rem;right:1rem;top:calc(100% + .4rem);background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:18px;padding:1rem;display:none;flex-direction:column;align-items:flex-start}
  .nav-links.open{display:flex}
  .hero-copy h1{font-size:clamp(2.2rem,11vw,3.25rem)}
  .hero-strip-inner,.grid-3,.grid-4,.stats-grid,.cards-grid,.materials-grid,.faq-grid,.areas-grid,.steps,.form-grid,.structure-grid{grid-template-columns:1fr}
  .cta-band{grid-template-columns:1fr}
  .section{padding:68px 0}
  .page-hero{padding:56px 0 44px}
}

/* V7 material family presentation */
.family-grid{display:grid;gap:1.4rem}
.family-card{background:var(--surface);border:1px solid var(--line);border-radius:30px;box-shadow:var(--shadow);overflow:hidden}
.family-top{display:grid;grid-template-columns:1fr auto;gap:1rem;align-items:end;padding:1.5rem 1.5rem 1.1rem;background:linear-gradient(135deg,#ffffff,#eef7f0)}
.family-top h3{font-size:1.55rem;margin:.2rem 0 .35rem;color:var(--brand-deep)}
.family-top p{margin:0;color:var(--muted)}
.family-badge{padding:.45rem .8rem;border-radius:999px;background:rgba(112,207,68,.16);color:var(--brand-dark);font-weight:800;white-space:nowrap}
.family-items{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;padding:1.2rem}
.family-items.four{grid-template-columns:repeat(4,1fr)}
.family-items.five{grid-template-columns:repeat(5,1fr)}
.material-mini{position:relative;overflow:hidden;border-radius:22px;min-height:230px;background:#eaf4ee}
.material-mini img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;transition:.35s ease}
.material-mini:hover img{transform:scale(1.04)}
.material-mini span{position:absolute;left:.75rem;right:.75rem;bottom:.75rem;background:rgba(255,255,255,.92);border:1px solid rgba(255,255,255,.55);border-radius:16px;padding:.7rem .8rem;font-weight:800;color:var(--brand-deep);box-shadow:0 10px 20px rgba(0,0,0,.12)}
.clean-list{display:flex;flex-wrap:wrap;gap:.6rem;margin-top:1rem}
.clean-list span{background:#fff;border:1px solid var(--line);border-radius:999px;padding:.55rem .85rem;font-weight:700;color:#28453b}
@media (max-width:1080px){.family-items,.family-items.four,.family-items.five{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.family-top{grid-template-columns:1fr}.family-items,.family-items.four,.family-items.five{grid-template-columns:1fr}.material-mini{min-height:220px}}


/* V7.1 material families */
.family-preview-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1.3rem}
.family-preview{display:grid;grid-template-columns:170px 1fr;gap:1rem;align-items:stretch;background:var(--surface);border:1px solid var(--line);border-radius:28px;box-shadow:var(--shadow);overflow:hidden}
.family-preview img{width:100%;height:100%;object-fit:cover}
.family-preview-body{padding:1rem 1.1rem}
.family-preview-body h3{margin:.15rem 0 .45rem;color:var(--brand-deep);font-size:1.25rem}
.family-preview-body p{margin:.1rem 0 .8rem;color:var(--muted)}
.tag-list{display:flex;flex-wrap:wrap;gap:.5rem}
.tag-list span{padding:.48rem .74rem;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:.88rem;font-weight:700;color:#2b453b}
.family-grid{display:grid;gap:1.35rem}
.family-card{background:var(--surface);border:1px solid var(--line);border-radius:32px;box-shadow:var(--shadow);overflow:hidden}
.family-head{display:grid;grid-template-columns:1.1fr auto;gap:1rem;align-items:end;padding:1.5rem;background:linear-gradient(135deg,#ffffff,#eef7f0)}
.family-head h3{margin:0 0 .35rem;color:var(--brand-deep);font-size:1.55rem}
.family-head p{margin:0;color:var(--muted)}
.family-badge{padding:.5rem .85rem;border-radius:999px;background:rgba(112,207,68,.16);color:var(--brand-dark);font-weight:800;white-space:nowrap}
.material-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;padding:1.15rem}
.material-card{position:relative;border-radius:22px;overflow:hidden;min-height:245px;background:#edf4f0}
.material-card img{width:100%;height:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .35s ease}
.material-card:hover img{transform:scale(1.04)}
.material-card-info{position:absolute;left:.75rem;right:.75rem;bottom:.75rem;padding:.72rem .82rem;background:rgba(255,255,255,.93);border:1px solid rgba(255,255,255,.7);backdrop-filter:blur(7px);border-radius:16px;box-shadow:0 14px 30px rgba(0,0,0,.12)}
.material-card-info strong{display:block;color:var(--brand-deep);font-size:.98rem;line-height:1.2}
.material-card-info small{display:block;margin-top:.25rem;color:#5b7367;font-size:.78rem;line-height:1.25}
@media (max-width:1080px){.family-preview-grid{grid-template-columns:1fr}.material-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:680px){.family-preview{grid-template-columns:1fr}.family-preview img{max-height:220px}.family-head{grid-template-columns:1fr}.material-grid{grid-template-columns:1fr}}