:root{
  --bg:#000000;
  --accent:#FABA0D;
  --accent-rgb:250,186,13;
  --mint:#61FF9B;
  --text:#ffffff;
  --text-dim:rgba(255,255,255,.72);
  --text-dim2:rgba(255,255,255,.5);
  --card-bg:rgba(var(--accent-rgb),.06);
  --card-border:rgba(var(--accent-rgb),.9);
  --radius-lg:20px;
  --radius-md:15px;
  --maxw:1280px;
}

@property --angle{
  syntax:'<angle>';
  initial-value:0deg;
  inherits:false;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  font-weight:300;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  position:relative;
}

/* blueprint grid overlay */
.grid-wrap{position:relative;}
.grid-wrap::before{
  content:'';
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(90deg, rgba(var(--accent-rgb),.10) 1px, transparent 1px),
    linear-gradient(90deg, rgba(var(--accent-rgb),.10) 1px, transparent 1px);
  background-position:25% 0, 75% 0;
  background-size:1px 100%, 1px 100%;
  z-index:0;
}
.grid-wrap > *{position:relative; z-index:1;}

.container{max-width:var(--maxw); margin:0 auto; padding:0 20px;}

h1,h2,h3,h4{font-family:'Inter',sans-serif; font-weight:500; margin:0; color:var(--text);}
p{line-height:1.6; margin:0;}
a{color:inherit; text-decoration:none;}
ul{margin:0; padding:0; list-style:none;}

.eyebrow{
  color:var(--accent);
  text-transform:uppercase;
  font-weight:600;
  font-size:14px;
  letter-spacing:.5px;
}

.section-title{
  font-size:clamp(24px, 6vw, 45px);
  color:var(--accent);
  font-weight:500;
  line-height:1.15;
  text-align:center;
}

.section-sub{
  color:var(--text-dim);
  font-size:16px;
  font-weight:300;
  text-align:center;
  max-width:720px;
  margin:16px auto 0;
}

/* ---------- MOBILE-FIRST BASE LAYOUT ---------- */
section{padding:56px 0; position:relative;}

strong{color:var(--accent); font-weight:600;}

/* ---------- CTA BUTTON ---------- */
.btn{
  position:relative;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:18px 32px;
  border-radius:360px;
  color:#fff;
  font-weight:600;
  font-size:13px;
  letter-spacing:.3px;
  text-transform:uppercase;
  background:
    radial-gradient(circle at 20% 20%, rgba(97,255,155,.08) 1px, transparent 1.5px) 0 0/14px 14px,
    #050805;
  border:none;
  cursor:pointer;
  isolation:isolate;
  white-space:nowrap;
}
.btn::before{
  content:'';
  position:absolute;
  inset:0;
  border-radius:360px;
  padding:1px;
  background:conic-gradient(from var(--angle), transparent, var(--mint) 8%, #fff 12%, var(--mint) 16%, transparent 26%);
  -webkit-mask:linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite:xor;
  mask-composite:exclude;
  animation:spin 4s linear infinite;
  z-index:-1;
}
.btn::after{
  content:'';
  position:absolute;
  inset:0;
  border-radius:360px;
  box-shadow:0 0 0 1px rgba(26,24,24,.9) inset;
  z-index:-1;
}
@keyframes spin{ to{ --angle:360deg; } }
.btn-wrap{text-align:center; margin-top:36px;}
.btn-lg{padding:22px 40px; font-size:14px;}

/* ---------- HEADER / MOBILE NAV (base = mobile) ---------- */
header{
  position:fixed; top:0; left:0; right:0;
  z-index:100;
  background:rgba(0,0,0,.92);
  box-shadow:0 0 50px -20px rgba(255,201,0,.5);
  padding:12px 0;
}
header .container{display:flex; align-items:center; justify-content:space-between; gap:16px;}
.logo{display:flex; align-items:center; gap:10px;}
.logo img{height:34px; width:auto; display:block;}
.logo-text{font-size:12px; font-weight:700; line-height:1.2; color:#fff;}
.logo-text span{display:block; color:var(--accent);}

nav.main-nav{
  position:fixed; top:60px; left:0; right:0; bottom:0;
  background:#000;
  padding:30px 24px;
  transform:translateX(100%);
  transition:transform .3s ease;
  z-index:99;
}
nav.main-nav.open{transform:translateX(0);}
nav.main-nav ul{display:flex; flex-direction:column; gap:22px;}
nav.main-nav a{font-size:18px; color:var(--text-dim); font-weight:400; transition:color .2s;}
nav.main-nav a:hover{color:var(--accent);}

.header-cta{display:none;}
.header-cta .btn{padding:12px 22px; font-size:11px;}

.nav-toggle{display:block; background:none; border:none; color:#fff; font-size:24px; cursor:pointer;}

/* ---------- HERO (base = mobile) ---------- */
.hero{
  padding:140px 0 60px;
  text-align:center;
  position:relative;
  background:
    radial-gradient(ellipse 900px 500px at 50% 0%, rgba(var(--accent-rgb),.10), transparent 70%),
    #000;
}
.hero-photo{
  display:none;
  position:absolute;
  top:0; bottom:0;
  width:32%;
  background-size:cover;
  background-position:center top;
  opacity:.16;
  filter:grayscale(1);
  z-index:0;
}
.hero-photo.left{left:0; background-image:url('https://engenheirodotrafego.com/wp-content/uploads/2026/01/Dan-Araujo.jpg'); mask-image:linear-gradient(90deg,#000 40%, transparent); -webkit-mask-image:linear-gradient(90deg,#000 40%, transparent);}
.hero-photo.right{right:0; background-image:url('https://engenheirodotrafego.com/wp-content/uploads/2026/01/Dan-Araujo.jpg'); mask-image:linear-gradient(270deg,#000 40%, transparent); -webkit-mask-image:linear-gradient(270deg,#000 40%, transparent);}

.hero .container{position:relative; z-index:2;}
.hero-logo{width:84px; margin:0 auto 22px; display:block;}
.hero h1{
  font-size:clamp(26px, 7vw, 44px);
  line-height:1.25;
  max-width:900px;
  margin:0 auto;
  font-weight:500;
}
.hero .eyebrow{display:block; margin-top:22px; font-size:clamp(18px,4.5vw,28px); letter-spacing:1px;}
.hero p.lead{
  max-width:640px;
  margin:20px auto 0;
  color:var(--text-dim);
  font-size:16px;
  font-weight:300;
}
.hero-checklist{
  max-width:520px;
  margin:28px auto 0;
  text-align:left;
  display:inline-block;
}
.hero-checklist li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  margin-bottom:12px;
  color:#fff;
  font-size:15px;
  font-weight:400;
}
.hero-checklist svg{flex-shrink:0; margin-top:3px;}

.arrow-box{
  max-width:640px;
  margin:32px auto 0;
  border:1px solid rgba(var(--accent-rgb),.5);
  border-radius:14px;
  padding:16px 20px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  color:var(--text-dim);
  font-size:13.5px;
}
.arrow-box svg{color:var(--accent); flex-shrink:0;}

/* ---------- CARDS ---------- */
.card{
  background:var(--card-bg);
  border:.8px solid var(--card-border);
  border-radius:var(--radius-lg);
  box-shadow:0 0 51px -20px rgba(var(--accent-rgb),.26);
  padding:30px 24px;
  text-align:center;
}
.icon-circle{
  width:58px; height:58px;
  border-radius:50%;
  background:rgba(var(--accent-rgb),.12);
  display:flex; align-items:center; justify-content:center;
  margin:0 auto 18px;
}
.icon-circle svg{width:26px; height:26px; color:var(--accent);}
.card h3{color:var(--accent); font-size:19px; margin-bottom:10px;}
.card p{color:var(--text-dim); font-size:14.5px;}

/* grids: mobile-first base = stacked/narrow, widened via min-width queries below */
.grid-4{display:grid; grid-template-columns:repeat(2,1fr); gap:18px; margin-top:40px;}
.grid-3{display:grid; grid-template-columns:1fr; gap:18px; margin-top:40px;}
.grid-2{display:grid; grid-template-columns:1fr; gap:18px; margin-top:40px;}

/* highlight quote box */
.quote-box{
  max-width:820px;
  margin:32px auto;
  border:.8px solid var(--card-border);
  border-radius:var(--radius-md);
  background:var(--card-bg);
  box-shadow:0 0 70px -25px rgba(var(--accent-rgb),.38);
  padding:24px 26px;
  text-align:center;
  font-size:clamp(17px,4.5vw,24px);
  font-weight:500;
  color:#fff;
  line-height:1.4;
}
.quote-box strong{color:var(--accent);}

.narrow{max-width:760px; margin:0 auto;}
.center-text{text-align:center;}
.body-copy{color:var(--text-dim); font-size:16px; font-weight:300; margin-top:18px; line-height:1.7;}
.body-copy + .body-copy{margin-top:16px;}

/* ---------- RESULTS ---------- */
.results-grid{display:grid; grid-template-columns:1fr; gap:18px; margin-top:40px;}
.result-card{
  border:.8px solid var(--card-border);
  border-radius:var(--radius-lg);
  background:var(--card-bg);
  box-shadow:0 0 51px -20px rgba(var(--accent-rgb),.26);
  padding:20px;
  overflow:hidden;
}
.result-card img{width:100%; display:block; border-radius:10px; margin-bottom:16px;}
.result-card h3{color:var(--accent); font-size:19px; margin-bottom:8px;}
.result-card p{color:var(--text-dim); font-size:14.5px;}

/* ---------- TESTIMONIALS (WhatsApp) ---------- */
.testimonials-grid{display:grid; grid-template-columns:1fr; gap:18px; margin-top:40px;}
.testimonial-card{
  border:.8px solid var(--card-border);
  border-radius:var(--radius-lg);
  background:var(--card-bg);
  box-shadow:0 0 51px -20px rgba(var(--accent-rgb),.26);
  padding:16px;
}
.testimonial-card img{width:100%; display:block; border-radius:12px;}
.testimonial-card p{color:var(--text-dim); font-size:14px; margin-top:14px; text-align:center;}

/* ---------- PROOF GALLERY ---------- */
.proof-gallery{
  columns:1;
  column-gap:18px;
  margin-top:40px;
}
.proof-item{
  break-inside:avoid;
  border:.8px solid var(--card-border);
  border-radius:var(--radius-lg);
  background:var(--card-bg);
  box-shadow:0 0 51px -20px rgba(var(--accent-rgb),.26);
  padding:16px;
  margin-bottom:18px;
}
.proof-item img{width:100%; display:block; border-radius:10px;}
.proof-item p{color:var(--text-dim); font-size:13.5px; margin-top:12px; line-height:1.5;}

/* ---------- PROCESS STEPS ---------- */
.steps-grid{display:grid; grid-template-columns:1fr; gap:18px; margin-top:40px;}
.step-card{
  border:.8px solid rgba(var(--accent-rgb),.5);
  border-radius:var(--radius-lg);
  padding:24px 20px;
  background:rgba(var(--accent-rgb),.03);
}
.step-num{
  width:36px; height:36px;
  border-radius:50%;
  border:1px solid var(--accent);
  color:var(--accent);
  display:flex; align-items:center; justify-content:center;
  font-weight:600; font-size:14px;
  margin-bottom:16px;
}
.step-card h3{font-size:17px; color:var(--accent); margin-bottom:8px;}
.step-card p{color:var(--text-dim); font-size:14px;}

/* ---------- FOR WHO ---------- */
.who-box{
  border:.8px solid var(--card-border);
  border-radius:var(--radius-lg);
  background:var(--card-bg);
  padding:28px 24px;
}
.who-box h3{font-size:19px; margin-bottom:18px;}
.who-box.yes h3{color:var(--accent);}
.who-box.no h3{color:var(--text-dim);}
.who-box li{
  display:flex; gap:12px; align-items:flex-start;
  margin-bottom:14px;
  font-size:15px;
  color:var(--text-dim);
}
.who-box li svg{flex-shrink:0; margin-top:2px;}
.who-box.yes li svg{color:var(--accent);}
.who-box.no li svg{color:rgba(255,255,255,.35);}

/* ---------- INCLUDES + PRICE ---------- */
.includes-price{display:grid; grid-template-columns:1fr; gap:18px; margin-top:40px; align-items:stretch;}
.includes-box, .price-box{
  border:.8px solid var(--card-border);
  border-radius:var(--radius-lg);
  background:var(--card-bg);
  padding:28px 24px;
}
.includes-box h3, .price-box h3{color:var(--accent); font-size:18px; margin-bottom:18px;}
.includes-box li{display:flex; gap:12px; align-items:flex-start; margin-bottom:14px; font-size:14.5px; color:var(--text-dim);}
.includes-box li svg{color:var(--accent); flex-shrink:0; margin-top:2px;}

.price-box{text-align:center; display:flex; flex-direction:column; justify-content:center;}
.price-label{color:var(--text-dim); font-size:13px; text-transform:uppercase; letter-spacing:.5px;}
.price-main{font-size:42px; font-weight:800; color:var(--accent); margin:12px 0 2px; line-height:1.1; text-shadow:0 0 40px rgba(250,186,13,.45);}
.price-or{color:var(--text-dim2); font-size:12.5px; margin:8px 0 14px;}
.price-alt{font-size:15px; font-weight:500; color:var(--text-dim); margin-bottom:16px;}
.price-note{font-size:12.5px; color:var(--text-dim2); margin-top:16px; line-height:1.6;}
.price-deadline{
  display:inline-block;
  margin-top:14px;
  padding:8px 16px;
  border:1px solid rgba(var(--accent-rgb),.5);
  border-radius:360px;
  font-size:12.5px;
  color:var(--accent);
}

/* ---------- SECTORS ---------- */
.sectors-frame{
  border:.8px solid rgba(var(--accent-rgb),.5);
  border-radius:24px;
  padding:32px 20px;
  margin-top:36px;
  text-align:center;
}
.sectors-frame h3{font-size:clamp(20px,5vw,32px); margin-bottom:28px;}
.sectors-frame h3 span{color:var(--accent); font-weight:700;}
.pill-grid{display:flex; flex-wrap:wrap; gap:12px; justify-content:center;}
.pill{
  border:.8px solid rgba(var(--accent-rgb),.45);
  border-radius:14px;
  padding:14px 20px;
  font-size:14px;
  color:#fff;
  background:rgba(var(--accent-rgb),.03);
}

/* ---------- CLOSING QUOTE ---------- */
.closing{
  text-align:center;
  padding:64px 0;
}
.closing h2{
  font-size:clamp(22px,5.5vw,34px);
  color:var(--accent);
  line-height:1.4;
  max-width:820px;
  margin:0 auto;
}
.closing p{color:var(--text); font-size:17px; margin-top:16px;}

/* ---------- ABOUT ---------- */
.about-grid{display:grid; grid-template-columns:1fr; gap:32px; align-items:center; margin-top:16px;}
.about-grid h2{font-size:clamp(26px,6vw,38px); margin-bottom:18px;}
.about-grid p{color:var(--text-dim); font-size:15.5px; margin-bottom:14px; line-height:1.7;}
.about-photo{
  position:relative;
  border:1px solid var(--accent);
  border-radius:40px 12px 40px 12px;
  overflow:hidden;
  order:-1;
  max-width:360px;
  margin:0 auto;
}
.about-photo img{width:100%; display:block; filter:grayscale(1) contrast(1.05);}
.partner-badge{margin-top:20px; height:48px;}

/* ---------- FAQ ---------- */
.faq-list{max-width:820px; margin:40px auto 0;}
.faq-item{
  border:.8px solid rgba(var(--accent-rgb),.4);
  border-radius:14px;
  margin-bottom:12px;
  overflow:hidden;
  background:rgba(var(--accent-rgb),.03);
}
.faq-q{
  display:flex; align-items:center; justify-content:space-between;
  padding:18px 20px;
  cursor:pointer;
  font-size:15px;
  font-weight:500;
  color:#fff;
}
.faq-q .plus{color:var(--accent); font-size:19px; transition:transform .25s; flex-shrink:0; margin-left:14px;}
.faq-item.open .faq-q .plus{transform:rotate(45deg);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .3s ease, padding .3s ease;
  padding:0 20px;
  color:var(--text-dim);
  font-size:14px;
  line-height:1.6;
}
.faq-item.open .faq-a{max-height:220px; padding:0 20px 20px;}

/* ---------- FOOTER ---------- */
footer{
  padding:30px 0;
  text-align:center;
  border-top:1px solid rgba(255,255,255,.08);
  color:var(--text-dim2);
  font-size:12.5px;
}

/* =========================================================
   TABLET AND UP (>= 761px) — mobile-first progressive enhancement
   ========================================================= */
@media (min-width:761px){
  .container{padding:0 24px;}
  .eyebrow{font-size:15px;}
  .section-sub{font-size:17px; margin-top:18px;}
  section{padding:90px 0;}
  .btn{padding:20px 40px; font-size:14px;}
  .btn-wrap{margin-top:44px;}
  .btn-lg{padding:24px 52px; font-size:15px;}

  /* desktop-style horizontal nav appears from tablet width up */
  header{padding:14px 0;}
  header .container{gap:24px;}
  .logo img{height:38px;}
  .logo-text{font-size:13px;}
  nav.main-nav{position:static; padding:0; transform:none; background:none; z-index:auto; top:auto; bottom:auto;}
  nav.main-nav ul{flex-direction:row; gap:26px;}
  nav.main-nav a{font-size:14px;}
  .header-cta{display:block;}
  .header-cta .btn{padding:13px 26px; font-size:12px;}
  .nav-toggle{display:none;}

  .hero{padding:170px 0 90px;}
  .hero-photo{display:block;}
  .hero-logo{width:100px; margin-bottom:26px;}
  .hero .eyebrow{margin-top:26px;}
  .hero p.lead{margin-top:24px; font-size:17px;}
  .hero-checklist{margin-top:34px;}
  .hero-checklist li{font-size:16px;}
  .arrow-box{margin-top:40px; padding:20px 28px; font-size:15px;}

  .card{padding:36px 30px;}
  .icon-circle{width:64px; height:64px; margin-bottom:22px;}
  .icon-circle svg{width:28px; height:28px;}
  .card h3{font-size:20px; margin-bottom:12px;}
  .card p{font-size:15px;}

  .grid-3{grid-template-columns:1fr; gap:24px; margin-top:50px;}
  .grid-2{grid-template-columns:1fr; gap:24px; margin-top:50px;}
  .quote-box{margin:40px auto; padding:32px 40px;}
  .body-copy{font-size:17px; margin-top:22px;}

  .results-grid{grid-template-columns:1fr; gap:24px; margin-top:50px;}
  .result-card{padding:24px;}
  .result-card img{margin-bottom:20px;}
  .result-card h3{font-size:21px;}
  .result-card p{font-size:15px;}

  .testimonials-grid{grid-template-columns:1fr; gap:24px; margin-top:50px;}
  .testimonial-card{padding:20px;}
  .testimonial-card p{font-size:14.5px; margin-top:16px;}

  .proof-gallery{columns:2 220px; column-gap:24px; margin-top:50px;}
  .proof-item{padding:18px; margin-bottom:24px;}
  .proof-item p{font-size:14px; margin-top:14px;}

  .steps-grid{grid-template-columns:repeat(2,1fr); gap:24px; margin-top:50px;}
  .step-card{padding:30px 24px;}
  .step-num{width:38px; height:38px; margin-bottom:18px; font-size:15px;}
  .step-card h3{font-size:18px; margin-bottom:10px;}
  .step-card p{font-size:14.5px;}

  .who-box{padding:36px 34px;}
  .who-box h3{font-size:20px; margin-bottom:22px;}
  .who-box li{font-size:15.5px; margin-bottom:16px;}

  .includes-price{grid-template-columns:1fr; gap:24px; margin-top:50px;}
  .includes-box, .price-box{padding:38px;}
  .includes-box h3, .price-box h3{font-size:19px; margin-bottom:22px;}
  .includes-box li{font-size:15px; margin-bottom:14px;}
  .price-label{font-size:14px;}
  .price-main{font-size:52px; margin:14px 0 2px;}
  .price-or{font-size:13px; margin:8px 0 14px;}
  .price-alt{font-size:16px; margin-bottom:18px;}
  .price-note{font-size:13px; margin-top:18px;}
  .price-deadline{margin-top:16px; padding:8px 18px; font-size:13px;}

  .sectors-frame{padding:50px 40px; margin-top:40px;}
  .sectors-frame h3{margin-bottom:34px;}
  .pill-grid{gap:16px;}
  .pill{padding:16px 26px; font-size:15px;}

  .closing{padding:100px 0;}
  .closing p{font-size:19px; margin-top:18px;}

  .about-grid{gap:34px; margin-top:20px;}
  .about-grid p{font-size:16.5px; margin-bottom:16px;}
  .about-photo{max-width:360px; margin:0 auto;}
  .partner-badge{margin-top:24px; height:56px;}

  .faq-list{margin-top:50px;}
  .faq-item{margin-bottom:14px;}
  .faq-q{padding:22px 26px; font-size:16px;}
  .faq-q .plus{font-size:20px; margin-left:16px;}
  .faq-a{padding:0 26px; font-size:15px;}
  .faq-item.open .faq-a{max-height:200px; padding:0 26px 22px;}

  footer{padding:36px 0; font-size:13px;}
}

/* =========================================================
   DESKTOP (>= 981px) — full multi-column layout
   ========================================================= */
@media (min-width:981px){
  .grid-4{grid-template-columns:repeat(4,1fr);}
  .grid-3{grid-template-columns:repeat(3,1fr);}
  .grid-2{grid-template-columns:1fr 1fr;}
  .steps-grid{grid-template-columns:repeat(4,1fr);}
  .results-grid{grid-template-columns:repeat(2,1fr);}
  .includes-price{grid-template-columns:1.1fr .9fr;}
  .testimonials-grid{grid-template-columns:repeat(2,1fr);}
  .proof-gallery{columns:3 260px;}

  .about-grid{grid-template-columns:1fr 1fr;}
  .about-photo{order:0; max-width:none; margin:0;}
}