:root {
  --accent: #f1b900;
  --accent-dark: #b98400;
  --accent-glow: rgba(241, 185, 0, .28);
  --bg: #0a0a0b;
  --bg-2: #101012;
  --panel: #151517;
  --panel-2: #1b1b1e;
  --line: #27272b;
  --text: #f4f4f5;
  --muted: #a1a1aa;
  --muted-2: #71717a;
  --green: #25d366;
  --maxw: 1200px;
  --radius: 16px;
  --font-display: "Oswald", "Arial Narrow", sans-serif;
  --font-body: "Archivo", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: var(--font-body); font-size: 16px; line-height: 1.65; -webkit-font-smoothing: antialiased; }
body::selection { background: var(--accent); color: #0a0a0b; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
h1, h2, h3, h4 { margin-top: 0; font-family: var(--font-display); font-weight: 600; line-height: 1.08; letter-spacing: .01em; text-transform: uppercase; }
h1 { font-size: clamp(2.2rem, 5.5vw, 4rem); }
h2 { font-size: clamp(1.7rem, 3.6vw, 2.6rem); }
p { margin-top: 0; }

.lp-header { position: sticky; top: 0; z-index: 50; padding: 10px 0; background: #000; border-bottom: 1px solid var(--line); }
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 72px; }
.header-logo { width: 285px; height: auto; object-fit: contain; object-position: left center; }
.lp-phone { font-family: var(--font-display); font-weight: 600; font-size: 1rem; letter-spacing: .04em; }
.lp-phone:hover { color: var(--accent); }

.hero { position: relative; overflow: hidden; border-bottom: 1px solid var(--line); }
.hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(95deg, rgba(10,10,11,.90) 0%, rgba(10,10,11,.78) 37%, rgba(10,10,11,.25) 68%, rgba(10,10,11,.04)), linear-gradient(0deg, rgba(10,10,11,.92), rgba(10,10,11,0) 28%); }
.hero-bg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: 74% 42%; opacity: 1; }
.hero-inner { position: relative; z-index: 2; max-width: 800px; padding: 96px 0 88px; }
.hero-badge { display: inline-flex; align-items: center; gap: 10px; margin-bottom: 28px; padding: 9px 18px; border: 1px solid rgba(241,185,0,.48); border-radius: 999px; background: rgba(241,185,0,.11); color: #f8d86d; font-family: var(--font-display); font-size: .85rem; font-weight: 500; letter-spacing: .08em; text-transform: uppercase; }
.hero h1 { margin-bottom: 22px; text-shadow: 0 2px 18px rgba(0,0,0,.45); }
.hero p { max-width: 650px; margin-bottom: 22px; color: #e4e4e7; font-size: 1.15rem; text-shadow: 0 1px 8px rgba(0,0,0,.7); }
.hero-focus { display: block; margin-bottom: 30px; color: #f8d86d; font-family: var(--font-display); font-size: .9rem; font-weight: 500; letter-spacing: .06em; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 16px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 16px 30px; border: 0; border-radius: 8px; font-family: var(--font-display); font-size: 1rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; transition: transform .15s ease, box-shadow .15s ease, background .15s ease, border-color .15s ease; }
.btn:hover { transform: translateY(-2px); }
.btn-lg { min-height: 57px; }
.btn-whatsapp { background: var(--green); color: #06210f; box-shadow: 0 8px 28px rgba(37,211,102,.28); }
.btn-whatsapp svg { fill: currentColor; }
.btn-outline { border: 1px solid #3f3f46; background: transparent; color: var(--text); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.hero-trust { position: relative; z-index: 2; display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); }
.hero-trust > div { padding: 26px 24px; border-right: 1px solid var(--line); }
.hero-trust > div:last-child { border-right: 0; }
.hero-trust strong { display: flex; align-items: center; gap: 8px; font-family: var(--font-display); font-size: 1.5rem; font-weight: 700; text-transform: uppercase; }
.hero-trust span { color: var(--muted-2); font-size: .85rem; }
.hero-trust .accent { color: var(--accent); font-family: var(--font-display); font-size: 1.5rem; }

.section { padding: 88px 0; }
.section-alt { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--bg-2); }
.section-tight { padding: 52px 0; }
.testimonial-section { background: var(--bg-2); border-bottom: 1px solid var(--line); scroll-margin-top: 112px; }
.testimonial-layout { display: grid; grid-template-columns: 1.1fr 1fr; gap: 64px; align-items: center; }
.testimonial-video { width: 100%; max-width: 320px; margin: 0 auto; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: #000; }
.testimonial-video video { display: block; width: 100%; height: auto; aspect-ratio: 382 / 848; object-fit: contain; background: #000; }
.testimonial-video figcaption { padding: 12px 18px; color: var(--muted); font-size: .875rem; text-align: center; }
.testimonial-layout .section-copy { margin-bottom: 28px; }
.section-title { max-width: 860px; margin-bottom: 18px; }
.section-title em { color: var(--accent); font-style: normal; }
.section-copy, .text-column p { color: #d4d4d8; font-size: 1.08rem; }
.section-sub { max-width: 660px; margin-bottom: 44px; color: var(--muted); font-size: 1.05rem; }
.section-action { margin-top: 36px; }
.kicker { display: inline-flex; align-items: center; gap: 10px; margin-bottom: 14px; color: var(--accent); font-family: var(--font-display); font-size: .85rem; font-weight: 600; letter-spacing: .22em; text-transform: uppercase; }

.split { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 60px; }
.feature-media { position: relative; margin: 0; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
.feature-media img { width: 100%; aspect-ratio: 4 / 4.4; object-fit: cover; }
.feature-media figcaption { position: absolute; right: 16px; bottom: 16px; left: 16px; padding: 12px 14px; border-left: 3px solid var(--accent); background: rgba(10,10,11,.84); font-family: var(--font-display); font-size: .9rem; letter-spacing: .08em; }
.text-column { max-width: 840px; }
.copy-block { margin-bottom: 46px; }
.copy-block:last-child { margin-bottom: 0; }
.copy-block p { margin-bottom: 16px; }
.fluid-comparison, .risk-media { margin: 0; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
.fluid-comparison > img { width: 100%; height: auto; aspect-ratio: 3 / 2; object-fit: cover; }
.fluid-comparison figcaption { padding: 18px 20px; }
.fluid-labels { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 14px; text-align: center; font-family: var(--font-display); font-size: 1.1rem; font-weight: 500; letter-spacing: .04em; }
.fluid-labels span { padding-bottom: 10px; border-bottom: 2px solid #62626b; }
.fluid-labels span:last-child { color: var(--accent); border-color: var(--accent); }
.fluid-comparison small, .risk-media small { display: block; color: var(--muted); font-size: .8rem; line-height: 1.5; }
.risk-split { align-items: start; }
.risk-media > img { width: 100%; height: auto; aspect-ratio: 3 / 2; object-fit: cover; }
.risk-media figcaption { padding: 22px; }
.risk-media strong { display: block; margin-bottom: 8px; color: var(--accent); font-family: var(--font-display); font-size: 1.2rem; line-height: 1.35; text-transform: uppercase; }
.risk-media figcaption > span { display: block; margin-bottom: 12px; color: #d4d4d8; font-size: .95rem; }
.prevention-note { margin-top: 28px; padding: 22px 24px; border-left: 3px solid var(--accent); background: var(--panel); }
.prevention-note h3 { margin-bottom: 10px; color: var(--accent); font-size: 1.1rem; line-height: 1.3; }
.prevention-note p { margin-bottom: 0; color: #d4d4d8; }
.diesel-focus .section-copy { max-width: 740px; margin-bottom: 28px; }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.benefit-grid, .method-grid, .review-grid { margin-top: 36px; }
.card { padding: 30px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); transition: transform .2s ease, border-color .2s ease; }
.card:hover { transform: translateY(-3px); border-color: rgba(241,185,0,.42); }
.card h3 { margin: 0 0 12px; color: var(--accent); font-size: 1.25rem; }
.card p { margin: 0; color: var(--muted); }
.method-section { border-top: 0; }
.step-num { margin-bottom: 18px; color: var(--accent); font-family: var(--font-display); font-size: 2.15rem; font-weight: 700; }
.method-grid .card h3 { color: var(--text); }

.lp-gallery { display: grid; grid-template-columns: repeat(4, 1fr); grid-auto-rows: 220px; gap: 14px; margin-top: 32px; }
.lp-gallery figure { position: relative; margin: 0; overflow: hidden; border: 1px solid var(--line); border-radius: 12px; }
.lp-gallery figure.feature { grid-column: span 2; grid-row: span 2; }
.lp-gallery figure:not(.feature) { grid-column: span 2; }
.lp-gallery img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.lp-gallery figure:hover img { transform: scale(1.025); }
.lp-gallery figcaption { position: absolute; right: 0; bottom: 0; left: 0; padding: 30px 16px 14px; background: linear-gradient(transparent, rgba(0,0,0,.9)); color: #e4e4e7; font-size: .82rem; }

.review-card { display: flex; min-height: 330px; flex-direction: column; padding: 28px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
.review-stars { margin-bottom: 18px; color: var(--accent); letter-spacing: .12em; }
.review-card > p { flex: 1; color: #d4d4d8; }
.review-author { display: flex; align-items: center; gap: 12px; margin-top: 24px; }
.review-author > span { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 50%; background: var(--accent); color: #161100; font-weight: 700; }
.review-author strong, .review-author small { display: block; }
.review-author small { color: var(--muted-2); }

.brands-title { margin-bottom: 24px; font-size: 1.5rem; }
.brands { display: flex; flex-wrap: wrap; gap: 12px; }
.brands span { padding: 10px 14px; border: 1px solid var(--line); border-radius: 6px; color: var(--muted); font-family: var(--font-display); font-size: .88rem; letter-spacing: .06em; }

.faq { max-width: 780px; margin-top: 32px; }
.faq details { border-top: 1px solid var(--line); }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { position: relative; padding: 22px 45px 22px 0; cursor: pointer; list-style: none; font-family: var(--font-display); font-size: 1.15rem; font-weight: 600; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; top: 18px; right: 8px; color: var(--accent); font-size: 1.5rem; font-weight: 400; }
.faq details[open] summary::after { content: "−"; }
.faq details p { padding: 0 45px 22px 0; color: var(--muted); }

.final-cta { position: relative; text-align: center; background: linear-gradient(rgba(10,10,11,.9), rgba(10,10,11,.92)), url("./assets/oficina-innovar-real.jpg") center 60% / cover no-repeat; }
.final-inner { max-width: 820px; }
.final-inner .section-title { margin-right: auto; margin-left: auto; }
.final-inner .section-sub { margin-right: auto; margin-left: auto; }
.centered { justify-content: center; }

.footer { padding: 32px 0; border-top: 1px solid var(--line); background: #070708; }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; gap: 24px; color: var(--muted-2); font-size: .82rem; }
.footer-bottom a { color: var(--text); font-weight: 600; }
.floating-whatsapp { position: fixed; z-index: 60; right: 22px; bottom: 22px; width: 58px; height: 58px; display: grid; place-items: center; border-radius: 50%; background: var(--green); box-shadow: 0 12px 30px rgba(0,0,0,.35); transition: transform .15s ease; }
.floating-whatsapp:hover { transform: translateY(-2px); }
.floating-whatsapp svg { width: 30px; height: 30px; fill: white; }

.reveal { opacity: 0; transform: translateY(22px); transition: opacity .65s ease, transform .65s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

@media (max-width: 820px) {
  .section { padding: 60px 0; }
  .split { grid-template-columns: 1fr; gap: 36px; }
  .testimonial-layout { grid-template-columns: 1fr; gap: 28px; }
  .testimonial-video { max-width: 320px; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .hero-inner { padding: 80px 0 64px; }
  .hero-bg { object-position: 76% center; }
  .hero-trust { grid-template-columns: repeat(2, 1fr); }
  .hero-trust > div:nth-child(2) { border-right: 0; }
  .hero-trust > div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .lp-gallery { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 180px; }
  .lp-gallery figure.feature, .lp-gallery figure:not(.feature) { grid-column: span 1; }
  .lp-gallery figure.feature { grid-row: span 2; }
}

@media (max-width: 560px) {
  .container { padding: 0 18px; }
  .lp-header { padding: 8px 0; }
  .header-inner { min-height: 60px; }
  .header-logo { width: min(52vw, 220px); height: auto; }
  .lp-phone { font-size: .82rem; }
  .hero-bg { object-position: 76% center; }
  .hero::after { background: linear-gradient(90deg, rgba(10,10,11,.79), rgba(10,10,11,.48)), linear-gradient(0deg, rgba(10,10,11,.94), transparent 35%); }
  .hero-inner { padding: 64px 0 52px; }
  .hero-badge { padding: 8px 13px; font-size: .72rem; }
  .hero p { font-size: 1rem; }
  .hero-ctas { display: grid; }
  .btn { width: 100%; padding: 14px 18px; font-size: .9rem; }
  .hero-trust > div { padding: 20px 14px; }
  .hero-trust strong, .hero-trust .accent { font-size: 1.2rem; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .feature-media img { aspect-ratio: 4 / 3.7; }
  .lp-gallery { grid-auto-rows: 170px; }
  .lp-gallery figure.feature { grid-row: span 1; }
  .review-card { min-height: 280px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .floating-whatsapp { right: 15px; bottom: 15px; width: 54px; height: 54px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}