:root{
  --navy:#071b3d;
  --navy-2:#0b2d60;
  --yellow:#f6bd16;
  --green:#25d366;
  --green-dark:#16a64a;
  --text:#132033;
  --muted:#657084;
  --surface:#f4f7fb;
  --border:#dce3ec;
  --white:#fff;
  --shadow:0 18px 45px rgba(6,24,55,.14);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,Segoe UI,Arial,sans-serif;color:var(--text);background:#fff;line-height:1.55}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit}
.container{width:min(1120px,calc(100% - 32px));margin:auto}
.header{position:sticky;top:0;z-index:50;background:rgba(7,27,61,.96);border-bottom:1px solid rgba(255,255,255,.12);backdrop-filter:blur(12px)}
.nav-wrap{height:76px;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:11px;color:white}
.brand img{width:48px;height:48px;border-radius:50%;object-fit:cover}
.brand span{display:flex;flex-direction:column;line-height:1.05}
.brand strong{font-size:19px;letter-spacing:.04em}
.brand small{margin-top:6px;font-size:10px;letter-spacing:.22em;text-transform:uppercase;color:#bac8dd}
.nav{display:flex;align-items:center;gap:25px;color:#e7eef9;font-size:14px}
.nav>a:not(.btn):hover{color:var(--yellow)}
.menu-btn{display:none;background:none;border:0;color:white;font-size:26px}
.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:999px;padding:13px 22px;font-weight:750;border:1px solid transparent;transition:.2s;cursor:pointer}
.btn-small{padding:9px 16px}
.btn-whatsapp{background:var(--green);color:white;box-shadow:0 12px 28px rgba(37,211,102,.22)}
.btn-whatsapp:hover{background:var(--green-dark);transform:translateY(-1px)}
.btn-outline{color:white;border-color:rgba(255,255,255,.38);background:rgba(255,255,255,.07)}
.btn-outline:hover{background:rgba(255,255,255,.14)}
.hero{min-height:650px;position:relative;display:grid;align-items:center;overflow:hidden}
.hero-bg{position:absolute;inset:0;background-image:url("assets/cilindro-gnv-bg.webp");background-size:cover;background-position:center}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(3,18,45,.98) 0%,rgba(4,27,62,.88) 44%,rgba(4,25,57,.35) 100%)}
.hero-content{position:relative;padding:100px 0;color:white}
.hero-content>*{max-width:680px}
.eyebrow,.kicker{display:inline-block;font-size:12px;font-weight:850;text-transform:uppercase;letter-spacing:.16em;color:#184f97}
.eyebrow{color:var(--yellow);border:1px solid rgba(246,189,22,.45);background:rgba(246,189,22,.09);padding:7px 11px;border-radius:999px}
h1,h2,h3{font-family:Impact,Haettenschweiler,"Arial Narrow Bold",sans-serif;letter-spacing:.025em;text-transform:uppercase;line-height:1.04;margin:0}
h1{font-size:clamp(44px,7vw,76px);margin-top:20px}
.hero p{font-size:19px;color:#d9e4f5;margin:24px 0 0}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}
.quick-info{background:#eef2f7;border-bottom:1px solid var(--border)}
.quick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:25px;padding:28px 0}
.quick-grid>div{display:flex;align-items:center;gap:13px}
.quick-icon{width:46px;height:46px;display:grid;place-items:center;background:var(--navy);color:white;border-radius:13px;font-weight:800}
.quick-grid p{margin:0;display:flex;flex-direction:column}
.quick-grid small{color:var(--muted)}
.section{padding:88px 0}
.section-heading{max-width:700px;margin-bottom:42px}
.section-heading h2,.section h2{font-size:clamp(36px,5vw,52px);color:#0c182b;margin-top:8px}
.section-heading p,.section p{color:var(--muted)}
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.service-card{display:flex;flex-direction:column;min-height:290px;padding:25px;border:1px solid var(--border);border-radius:20px;background:white;box-shadow:0 9px 28px rgba(10,37,72,.06);transition:.22s}
.service-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#b9c9dc}
.service-icon{width:52px;height:52px;display:grid;place-items:center;background:linear-gradient(135deg,var(--navy),var(--navy-2));border-radius:14px;font-size:25px}
.service-card h3{font-size:23px;margin-top:20px}
.service-card p{font-size:15px;flex:1}
.details-btn{align-self:flex-start;background:none;border:0;color:#0b55aa;font-weight:800;padding:6px 0;cursor:pointer}
.details-btn:hover{text-decoration:underline}
.section-dark{background:var(--navy);color:white}
.section-dark h2{color:white}
.section-dark p{color:#cbd7e9}
.kicker-light{color:var(--yellow)}
.split{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:55px}
.check-list{list-style:none;padding:0;margin:30px 0 0;display:grid;gap:14px}
.check-list li{position:relative;padding-left:29px;color:#eaf1fb}
.check-list li:before{content:"✓";position:absolute;left:0;color:var(--yellow);font-weight:900}
.tank-card img{border-radius:24px;box-shadow:0 24px 60px rgba(0,0,0,.28)}
.about{display:grid;grid-template-columns:320px 1fr;align-items:center;gap:55px}
.about-badge{background:var(--navy);border-radius:30px;padding:34px;box-shadow:var(--shadow)}
.about-badge img{border-radius:50%}
.contact-section{background:var(--surface);border-top:1px solid var(--border)}
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:55px;align-items:start}
.contact-grid .btn{margin-top:18px}
.contact-cards{display:grid;gap:15px}
.contact-card{display:flex;gap:16px;padding:20px;background:white;border:1px solid var(--border);border-radius:17px;box-shadow:0 7px 22px rgba(12,35,65,.05)}
a.contact-card:hover{border-color:#9db6d2;transform:translateY(-2px)}
.contact-card>span{width:43px;height:43px;display:grid;place-items:center;border-radius:12px;background:var(--navy);font-size:20px}
.contact-card strong{display:block;text-transform:uppercase;font-size:14px;letter-spacing:.05em}
.contact-card p{margin:4px 0 0;font-size:14px}
.contact-card small{color:#0b55aa;font-weight:700}
footer{background:#04132e;color:#c2cee0}
.footer-content{min-height:105px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.footer-brand img{width:40px;height:40px}
footer p{font-size:13px}
.floating-whatsapp{position:fixed;right:20px;bottom:20px;z-index:40;width:58px;height:58px;border-radius:50%;display:grid;place-items:center;background:var(--green);color:white;font-size:28px;box-shadow:0 15px 35px rgba(20,130,61,.35)}
dialog{width:min(620px,calc(100% - 28px));border:0;border-radius:24px;padding:34px;box-shadow:0 30px 90px rgba(1,14,35,.38)}
dialog::backdrop{background:rgba(3,16,38,.7);backdrop-filter:blur(4px)}
.dialog-close{position:absolute;right:15px;top:12px;background:none;border:0;font-size:32px;color:#677287;cursor:pointer}
.dialog-icon{font-size:34px}
dialog h2{font-size:34px;margin-top:10px}
dialog p{color:var(--muted)}
.dialog-price{padding:14px 16px;border-radius:14px;background:var(--surface);margin:16px 0;font-weight:750}
.dialog-list{padding-left:20px;color:#3c485b}
.dialog-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:25px}
@media(max-width:850px){
  .menu-btn{display:block}
  .nav{display:none;position:absolute;top:76px;left:0;right:0;padding:18px 16px 24px;background:var(--navy);flex-direction:column;align-items:stretch;gap:8px;border-top:1px solid rgba(255,255,255,.12)}
  .nav.open{display:flex}
  .nav a{padding:9px}
  .hero{min-height:600px}
  .hero-overlay{background:linear-gradient(90deg,rgba(3,18,45,.97),rgba(3,18,45,.78))}
  .services-grid{grid-template-columns:repeat(2,1fr)}
  .split,.contact-grid{grid-template-columns:1fr}
  .about{grid-template-columns:220px 1fr}
}
@media(max-width:620px){
  .nav-wrap{height:68px}
  .nav{top:68px}
  .brand img{width:42px;height:42px}
  .hero{min-height:620px}
  .hero-content{padding:80px 0}
  h1{font-size:44px}
  .hero p{font-size:17px}
  .quick-grid{grid-template-columns:1fr;gap:17px}
  .section{padding:68px 0}
  .services-grid{grid-template-columns:1fr}
  .service-card{min-height:0}
  .about{grid-template-columns:1fr}
  .about-badge{max-width:240px}
  .footer-content{padding:25px 0;flex-direction:column;align-items:flex-start}
}

/* Redes sociais */
.nav-socials{display:flex;align-items:center;gap:8px}
.nav-socials a{width:32px;height:32px;display:grid;place-items:center;border:1px solid rgba(255,255,255,.25);border-radius:50%;font-size:13px;font-weight:900;color:white;transition:.2s}
.nav-socials a:hover{background:var(--yellow);border-color:var(--yellow);color:var(--navy);transform:translateY(-1px)}
.social-contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}
.social-contact{display:flex;align-items:center;gap:13px;padding:17px;border-radius:16px;color:white;box-shadow:0 8px 22px rgba(12,35,65,.1);transition:.2s}
.social-contact:hover{transform:translateY(-2px);filter:brightness(1.04)}
.social-contact.instagram{background:linear-gradient(135deg,#833ab4,#fd1d1d,#fcb045)}
.social-contact.facebook{background:#1877f2}
.social-mark{width:40px;height:40px;display:grid;place-items:center;border-radius:12px;background:rgba(255,255,255,.18);font-weight:900;font-size:18px}
.social-contact strong,.social-contact small{display:block;color:white}
.social-contact small{opacity:.88;margin-top:2px}
.footer-socials{display:flex;gap:10px}
.footer-socials a{border:1px solid rgba(255,255,255,.2);border-radius:999px;padding:8px 13px;font-size:12px;font-weight:750;color:#dce7f6}
.footer-socials a:hover{color:var(--yellow);border-color:var(--yellow)}
@media(max-width:850px){
  .nav-socials{padding:8px 9px}
  .nav-socials a{width:38px;height:38px}
}
@media(max-width:620px){
  .social-contact-grid{grid-template-columns:1fr}
  .footer-socials{flex-wrap:wrap}
}