:root {
  --blue-950: #062b57;
  --blue-900: #083b78;
  --blue-700: #0b5ed7;
  --blue-600: #1674e8;
  --blue-100: #eaf3ff;
  --blue-50: #f5f9ff;
  --green: #20b86a;
  --green-dark: #159353;
  --white: #ffffff;
  --text: #18324b;
  --muted: #61748a;
  --line: #dbe5ef;
  --soft: #f5f8fb;
  --shadow: 0 20px 60px rgba(17, 61, 102, 0.13);
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --container: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
body.menu-open { overflow: hidden; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }

.container { width: min(calc(100% - 40px), var(--container)); margin-inline: auto; }
.section-pad { padding: 96px 0; }
.soft-bg { background: var(--soft); }

.demo-bar {
  background: var(--blue-950);
  color: rgba(255,255,255,.9);
  text-align: center;
  font-size: .78rem;
  padding: 7px 16px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255,255,255,.94);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(219,229,239,.8);
}
.header-inner { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 11px; }
.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  color: var(--white);
  background: linear-gradient(145deg, var(--blue-700), var(--blue-900));
  box-shadow: 0 8px 24px rgba(11,94,215,.24);
  flex: 0 0 auto;
}
.brand-mark svg { width: 26px; height: 26px; }
.brand strong, .brand small { display: block; line-height: 1.15; }
.brand strong { font-size: 1.05rem; letter-spacing: -.02em; }
.brand small { margin-top: 4px; color: var(--muted); font-size: .72rem; }
.main-nav { display: flex; align-items: center; gap: 28px; font-size: .94rem; font-weight: 650; }
.main-nav > a:not(.nav-cta) { position: relative; }
.main-nav > a:not(.nav-cta)::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -6px;
  height: 2px;
  background: var(--blue-700);
  transition: right .25s ease;
}
.main-nav > a:not(.nav-cta):hover::after { right: 0; }
.nav-cta { background: var(--green); color: var(--white); padding: 12px 17px; border-radius: 12px; box-shadow: 0 8px 20px rgba(32,184,106,.2); }
.nav-cta:hover { background: var(--green-dark); }
.menu-toggle { display: none; width: 44px; height: 44px; border: 1px solid var(--line); background: var(--white); border-radius: 12px; padding: 10px; }
.menu-toggle span { display: block; height: 2px; background: var(--blue-950); margin: 5px 0; transition: .25s ease; }

.hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 78% 20%, rgba(22,116,232,.16), transparent 28%),
    radial-gradient(circle at 12% 96%, rgba(32,184,106,.11), transparent 22%),
    linear-gradient(180deg, #f8fbff 0%, #ffffff 100%);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(11,94,215,.035) 1px, transparent 1px), linear-gradient(90deg, rgba(11,94,215,.035) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.8), transparent 88%);
  pointer-events: none;
}
.hero-grid { position: relative; display: grid; grid-template-columns: 1.12fr .88fr; gap: 74px; align-items: center; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-transform: uppercase;
  letter-spacing: .12em;
  font-size: .74rem;
  font-weight: 800;
  color: var(--blue-700);
}
.eyebrow::before { content: ""; width: 24px; height: 2px; background: currentColor; }
.eyebrow.light { color: #bfe7ff; }
.hero h1 { max-width: 740px; margin: 18px 0 22px; font-size: clamp(2.7rem, 5.5vw, 5rem); line-height: .99; letter-spacing: -.055em; color: var(--blue-950); }
.hero-copy > p { max-width: 650px; color: var(--muted); font-size: 1.12rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 9px; min-height: 50px; padding: 13px 20px; border-radius: 13px; border: 1px solid transparent; font-weight: 750; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.btn:hover { transform: translateY(-2px); }
.btn-primary { color: var(--white); background: var(--green); box-shadow: 0 12px 28px rgba(32,184,106,.25); }
.btn-primary:hover { background: var(--green-dark); box-shadow: 0 16px 32px rgba(32,184,106,.32); }
.btn-secondary { color: var(--blue-900); border-color: var(--line); background: rgba(255,255,255,.8); }
.btn-secondary:hover { border-color: #b7cae0; box-shadow: 0 12px 28px rgba(17,61,102,.09); }
.btn-light { background: var(--white); color: var(--blue-900); }
.btn.full { width: 100%; }
.whatsapp-icon { width: 22px; height: 22px; border-radius: 50%; display: grid; place-items: center; background: rgba(255,255,255,.18); }
.trust-list { list-style: none; padding: 0; margin: 27px 0 0; display: flex; flex-wrap: wrap; gap: 18px 28px; color: var(--muted); font-size: .91rem; font-weight: 650; }
.trust-list li::before { content: "✓"; color: var(--green); font-weight: 900; margin-right: 8px; }

.hero-card { background: rgba(255,255,255,.88); border: 1px solid rgba(255,255,255,.9); border-radius: var(--radius-lg); box-shadow: var(--shadow); overflow: hidden; transform: rotate(1.5deg); }
.hero-visual { height: 250px; position: relative; display: grid; place-items: center; overflow: hidden; background: linear-gradient(145deg, #dcebff, #f7fbff); }
.hero-visual::before { content: ""; position: absolute; width: 320px; height: 320px; border-radius: 50%; border: 1px solid rgba(11,94,215,.13); }
.hero-visual::after { content: ""; position: absolute; width: 230px; height: 230px; border-radius: 50%; border: 1px solid rgba(11,94,215,.13); }
.sun { position: absolute; right: 34px; top: 28px; width: 64px; height: 64px; border-radius: 50%; background: #ffd16a; box-shadow: 0 0 0 13px rgba(255,209,106,.18); }
.air-unit { position: relative; z-index: 2; width: min(330px, 76%); height: 104px; border-radius: 22px 22px 16px 16px; background: linear-gradient(180deg, #fff, #edf4fb); box-shadow: 0 24px 40px rgba(20,70,120,.23); border: 1px solid rgba(255,255,255,.8); }
.air-display { position: absolute; right: 24px; top: 22px; color: var(--blue-600); font-size: .9rem; font-weight: 800; }
.air-slot { position: absolute; left: 30px; right: 30px; bottom: 18px; height: 10px; border-radius: 10px; background: #b9cde1; box-shadow: inset 0 3px 5px rgba(8,59,120,.12); }
.air-flow { position: absolute; width: 54px; height: 70px; bottom: -72px; border: 3px solid rgba(22,116,232,.32); border-top-color: transparent; border-left-color: transparent; border-radius: 50%; transform: rotate(45deg); }
.flow-one { left: 65px; }
.flow-two { left: 140px; bottom: -80px; }
.flow-three { right: 62px; }
.hero-card-content { padding: 28px 30px 31px; }
.status { display: inline-flex; align-items: center; gap: 8px; font-size: .78rem; font-weight: 800; color: var(--green-dark); background: #eafaf2; border-radius: 999px; padding: 7px 10px; }
.status i { width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 4px rgba(32,184,106,.13); }
.hero-card h2 { margin: 15px 0 7px; font-size: 1.55rem; letter-spacing: -.035em; }
.hero-card p { color: var(--muted); margin: 0; }
.mini-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 22px; }
.mini-stats div { background: var(--blue-50); padding: 13px; border-radius: 13px; }
.mini-stats strong, .mini-stats span { display: block; }
.mini-stats strong { color: var(--blue-700); font-size: 1.15rem; }
.mini-stats span { color: var(--muted); font-size: .75rem; }

.audience-strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--white); }
.audience-grid { display: grid; grid-template-columns: repeat(3, 1fr); }
.audience-grid > div { padding: 28px 34px; display: grid; grid-template-columns: 42px 1fr; gap: 0 14px; align-items: center; }
.audience-grid > div + div { border-left: 1px solid var(--line); }
.audience-grid span { grid-row: 1 / span 2; width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center; color: var(--blue-700); background: var(--blue-100); font-size: 1.25rem; }
.audience-grid strong { line-height: 1.2; }
.audience-grid small { color: var(--muted); }

.section-heading { max-width: 760px; margin: 0 auto 48px; text-align: center; }
.section-heading.compact { margin-bottom: 42px; }
.section-heading h2, .benefits-panel h2, .faq-intro h2, .contact-section h2 { margin: 13px 0 16px; font-size: clamp(2rem, 4vw, 3.3rem); line-height: 1.08; letter-spacing: -.045em; color: var(--blue-950); }
.section-heading p, .benefits-panel p, .faq-intro p { color: var(--muted); margin: 0; }
.cards { display: grid; gap: 24px; }
.three-col { grid-template-columns: repeat(3, 1fr); }
.service-card { position: relative; padding: 30px; border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--white); transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease; }
.service-card:hover { transform: translateY(-6px); border-color: #bad2ec; box-shadow: 0 20px 45px rgba(17,61,102,.11); }
.service-card.featured { border-color: rgba(32,184,106,.35); box-shadow: 0 15px 42px rgba(32,184,106,.11); }
.card-badge { position: absolute; right: 20px; top: 20px; color: var(--green-dark); background: #e9faf1; font-size: .7rem; font-weight: 800; padding: 6px 9px; border-radius: 999px; }
.icon-box { width: 50px; height: 50px; display: grid; place-items: center; border-radius: 14px; color: var(--blue-700); background: var(--blue-100); font-size: 1.35rem; font-weight: 900; }
.service-card h3 { margin: 20px 0 9px; font-size: 1.33rem; letter-spacing: -.02em; }
.service-card p { color: var(--muted); }
.service-card ul { list-style: none; padding: 0; margin: 20px 0 0; border-top: 1px solid var(--line); padding-top: 17px; }
.service-card li { position: relative; padding-left: 22px; color: var(--muted); margin: 8px 0; font-size: .91rem; }
.service-card li::before { content: "✓"; position: absolute; left: 0; color: var(--green); font-weight: 900; }

.split-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 68px; align-items: center; }
.text-link { display: inline-flex; align-items: center; gap: 10px; margin-top: 25px; color: var(--blue-700); font-weight: 800; }
.text-link span { transition: transform .2s ease; }
.text-link:hover span { transform: translateX(4px); }
.benefits-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; }
.benefits-grid article { display: flex; gap: 15px; background: var(--white); padding: 23px; border: 1px solid var(--line); border-radius: var(--radius-md); box-shadow: 0 12px 30px rgba(17,61,102,.05); }
.benefits-grid article > span { width: 37px; height: 37px; flex: 0 0 auto; display: grid; place-items: center; border-radius: 10px; background: var(--blue-100); color: var(--blue-700); font-size: .75rem; font-weight: 900; }
.benefits-grid h3 { margin: 1px 0 6px; font-size: 1.04rem; }
.benefits-grid p { margin: 0; color: var(--muted); font-size: .88rem; }

.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); position: relative; gap: 24px; }
.process-grid::before { content: ""; position: absolute; top: 27px; left: 9%; right: 9%; height: 1px; background: #b9cce0; }
.process-grid article { position: relative; text-align: center; padding: 0 12px; }
.process-grid article > span { position: relative; z-index: 2; margin: 0 auto 22px; width: 56px; height: 56px; display: grid; place-items: center; border-radius: 50%; background: var(--white); border: 2px solid var(--blue-700); color: var(--blue-700); font-weight: 900; box-shadow: 0 0 0 8px var(--white); }
.process-grid h3 { font-size: 1.1rem; margin: 0 0 8px; }
.process-grid p { color: var(--muted); font-size: .9rem; margin: 0; }

.testimonial-section { background: linear-gradient(180deg, #fff, var(--blue-50)); }
.testimonial-card { margin: 0; padding: 28px; background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-md); box-shadow: 0 15px 40px rgba(17,61,102,.07); }
.stars { color: #f4b740; letter-spacing: .12em; font-size: .9rem; }
.testimonial-card > p { color: #425b73; font-size: 1rem; min-height: 120px; }
.testimonial-card footer { display: flex; align-items: center; gap: 12px; border-top: 1px solid var(--line); padding-top: 18px; }
.testimonial-card footer > span { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 50%; background: var(--blue-100); color: var(--blue-700); font-weight: 900; }
.testimonial-card strong, .testimonial-card small { display: block; }
.testimonial-card small { color: var(--muted); }

.faq-layout { display: grid; grid-template-columns: .72fr 1.28fr; gap: 75px; align-items: start; }
.faq-intro { position: sticky; top: 125px; }
.faq-list { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius-md); overflow: hidden; }
.faq-item + .faq-item { border-top: 1px solid var(--line); }
.faq-item button { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 22px 24px; border: 0; background: var(--white); color: var(--text); text-align: left; font-weight: 800; }
.faq-item button:hover { background: var(--blue-50); }
.faq-item button i { font-style: normal; color: var(--blue-700); font-size: 1.45rem; font-weight: 400; transition: transform .2s ease; }
.faq-item.active button i { transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq-answer p { color: var(--muted); margin: 0; padding: 0 24px 22px; }

.contact-section { color: var(--white); background: linear-gradient(135deg, var(--blue-950), var(--blue-700)); position: relative; overflow: hidden; }
.contact-section::after { content: ""; position: absolute; width: 450px; height: 450px; border-radius: 50%; right: -120px; top: -180px; border: 80px solid rgba(255,255,255,.05); }
.contact-grid { position: relative; z-index: 2; display: grid; grid-template-columns: .9fr 1.1fr; gap: 70px; align-items: center; }
.contact-section h2 { color: var(--white); }
.contact-section > .container > div > p { color: rgba(255,255,255,.75); max-width: 550px; }
.demo-form { background: var(--white); color: var(--text); padding: 28px; border-radius: var(--radius-md); box-shadow: 0 25px 65px rgba(0,0,0,.2); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.demo-form label { display: block; color: #31495f; font-size: .84rem; font-weight: 750; margin-bottom: 14px; }
.demo-form input, .demo-form select, .demo-form textarea { width: 100%; margin-top: 6px; border: 1px solid var(--line); border-radius: 11px; background: #fbfdff; color: var(--text); padding: 12px 13px; outline: none; transition: border-color .2s ease, box-shadow .2s ease; }
.demo-form input:focus, .demo-form select:focus, .demo-form textarea:focus { border-color: var(--blue-600); box-shadow: 0 0 0 3px rgba(22,116,232,.12); }
.demo-form textarea { resize: vertical; }
.form-note { color: var(--muted); font-size: .75rem; text-align: center; margin: 11px 0 0; }
.form-feedback { min-height: 22px; margin-top: 5px; text-align: center; color: var(--green-dark); font-size: .83rem; font-weight: 750; }

.site-footer { background: #041f3e; color: rgba(255,255,255,.72); padding: 64px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr .7fr .9fr; gap: 60px; }
.footer-brand { color: var(--white); }
.footer-brand .brand-mark { background: rgba(255,255,255,.12); box-shadow: none; }
.footer-brand small { color: rgba(255,255,255,.58); }
.footer-grid > div:first-child p { max-width: 480px; }
.footer-grid h3 { color: var(--white); font-size: .98rem; margin: 0 0 15px; }
.footer-grid > div:not(:first-child) { display: flex; flex-direction: column; gap: 9px; }
.footer-grid a:hover { color: var(--white); }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; border-top: 1px solid rgba(255,255,255,.1); margin-top: 48px; padding-top: 22px; font-size: .78rem; }

.floating-whatsapp { position: fixed; z-index: 60; right: 22px; bottom: 22px; width: 58px; height: 58px; border-radius: 50%; display: grid; place-items: center; background: var(--green); color: var(--white); box-shadow: 0 14px 32px rgba(32,184,106,.35); transition: transform .2s ease, background .2s ease; }
.floating-whatsapp:hover { transform: translateY(-4px) scale(1.03); background: var(--green-dark); }
.floating-whatsapp svg { width: 30px; height: 30px; }

@media (max-width: 980px) {
  .section-pad { padding: 78px 0; }
  .menu-toggle { display: block; }
  .main-nav {
    position: fixed;
    top: 109px;
    left: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--white);
    box-shadow: var(--shadow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    transition: .25s ease;
  }
  .main-nav.open { opacity: 1; visibility: visible; transform: translateY(0); }
  .main-nav a { padding: 12px 10px; }
  .main-nav > a:not(.nav-cta)::after { display: none; }
  .nav-cta { text-align: center; margin-top: 6px; }
  .menu-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .menu-toggle.active span:nth-child(2) { opacity: 0; }
  .menu-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .hero-grid, .split-layout, .faq-layout, .contact-grid { grid-template-columns: 1fr; gap: 48px; }
  .hero-card { width: min(100%, 620px); margin-inline: auto; transform: none; }
  .three-col { grid-template-columns: 1fr 1fr; }
  .service-card:last-child, .testimonial-card:last-child { grid-column: 1 / -1; }
  .process-grid { grid-template-columns: 1fr 1fr; row-gap: 46px; }
  .process-grid::before { display: none; }
  .faq-intro { position: static; }
  .footer-grid { grid-template-columns: 1.25fr 1fr; }
  .footer-grid > div:first-child { grid-column: 1 / -1; }
}

@media (max-width: 700px) {
  .container { width: min(calc(100% - 28px), var(--container)); }
  .demo-bar { font-size: .7rem; }
  .header-inner { min-height: 70px; }
  .brand-mark { width: 40px; height: 40px; }
  .brand strong { font-size: .98rem; }
  .main-nav { top: 101px; left: 14px; right: 14px; }
  .section-pad { padding: 65px 0; }
  .hero { padding-top: 70px; }
  .hero h1 { font-size: clamp(2.45rem, 14vw, 4.1rem); }
  .hero-copy > p { font-size: 1rem; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .trust-list { display: grid; gap: 10px; }
  .hero-visual { height: 210px; }
  .air-unit { width: 78%; height: 92px; }
  .audience-grid { grid-template-columns: 1fr; }
  .audience-grid > div + div { border-left: 0; border-top: 1px solid var(--line); }
  .audience-grid > div { padding: 21px 10px; }
  .section-heading { margin-bottom: 34px; }
  .three-col, .benefits-grid, .process-grid, .form-row, .footer-grid { grid-template-columns: 1fr; }
  .service-card:last-child, .testimonial-card:last-child, .footer-grid > div:first-child { grid-column: auto; }
  .process-grid { gap: 34px; }
  .process-grid article { display: grid; grid-template-columns: 50px 1fr; column-gap: 15px; text-align: left; padding: 0; }
  .process-grid article > span { width: 48px; height: 48px; margin: 0; grid-row: 1 / span 2; box-shadow: none; }
  .process-grid h3 { margin-top: 1px; }
  .testimonial-card > p { min-height: auto; }
  .contact-grid { gap: 38px; }
  .demo-form { padding: 20px; }
  .footer-grid { gap: 32px; }
  .footer-bottom { flex-direction: column; }
  .floating-whatsapp { width: 54px; height: 54px; right: 16px; bottom: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}